Add durable program session execution flow

CHANGELOG.md

@@ -2,6 +2,16 @@
 
 ## Unreleased — 0.1.2
 
+- Added the Program execution flow. Android schema v25 can start or resume one
+  Program session through the existing durable singleton, preserves stable
+  Program provenance on completion, and presents explicit `À faire`, `En cours`
+  and `Effectuée` states. Desktop schema v27 stores the corresponding unique
+  execution link. The optional `trainlog-program-executions` V1 full-generation
+  companion advances Web Program sessions from persisted facts without changing
+  mobile export V3, `programs-v1`, or `TRAINLOG_FORMAT_V1`. Web also exposes
+  `À faire`, `Préparée`, `En cours`, and `Effectuée` session states, while the
+  existing logical Program deletion and confirmation semantics remain intact.
+
 - Completed the private coordinated deployment of
   `TRAINLOG_PROGRAMS_PRESENTATION_ANDROID_DELETE_V1`. Desktop schema v26 adds
   terminal logical Program deletion with

README.md

@@ -320,7 +320,7 @@ not contain cloud credentials and does not run `rclone`.
 As of 2026-09-18:
 
 - `TRAINLOG_FORMAT_V1=PASS/FROZEN`;
-- desktop SQLite schema v26 and Android SQLite schema v24;
+- desktop SQLite schema v27 and Android SQLite schema v25;
 - Notcurses is the only active desktop terminal backend;
 - direct storage is `/storage/emulated/0/Documents/Trainlog` under Android's
   all-files access setting;

android/app/src/main/java/com/labfytools/trainlog/data/AndroidBackupService.kt

@@ -219,7 +219,7 @@ internal class AndroidBackupService(private val context: Context) {
                         manifest.getInt("version") == VERSION &&
                         manifest.getString("package") == context.packageName &&
                         manifest.getBoolean("plaintext") &&
-                        manifest.getInt("schema") in 17..24
+                        manifest.getInt("schema") in 17..25
                 ) {
                     "Unsupported backup."
                 }
@@ -313,7 +313,7 @@ internal class AndroidBackupService(private val context: Context) {
                 }
             )
             require(db.rawQuery("PRAGMA foreign_key_check", null).use { !it.moveToFirst() })
-            require(db.version in 17..24) { "Unsupported Android schema ${db.version}." }
+            require(db.version in 17..25) { "Unsupported Android schema ${db.version}." }
             return db.version
         } finally {
             db.close()

android/app/src/main/java/com/labfytools/trainlog/data/SyncGenerationService.kt

@@ -66,6 +66,8 @@ internal class SyncGenerationService(private val repository: TrainlogRepository)
                 "feedback" to Kind("trainlog-training-feedback", 2, "feedback-v2.json"),
                 "causal-deletions" to
                     Kind("trainlog-causal-deletions", 1, "causal-deletions-v1.json"),
+                "program-executions" to
+                    Kind("trainlog-program-executions", 1, "program-executions-v1.json", false),
             )
         private val SUPPORTED =
             (ANDROID_KINDS.values +
@@ -581,7 +583,7 @@ internal class SyncGenerationService(private val repository: TrainlogRepository)
             if (total > MAX_GENERATION_BYTES)
                 throw SyncGenerationException("generation exceeds bound")
         }
-        if (!ANDROID_KINDS.keys.all { it in names })
+        if (!ANDROID_KINDS.filterValues { it.required }.keys.all { it in names })
             throw SyncGenerationException("missing required domain")
         return root
     }

android/app/src/main/java/com/labfytools/trainlog/data/TrainlogRepository.kt

@@ -42,6 +42,7 @@ import com.labfytools.trainlog.model.SyncedProgramDetail
 import com.labfytools.trainlog.model.SyncedProgramOccurrence
 import com.labfytools.trainlog.model.SyncedProgramSession
 import com.labfytools.trainlog.model.SyncedProgramSummary
+import com.labfytools.trainlog.model.ProgramSessionExecutionState
 import org.json.JSONArray
 import org.json.JSONObject
 import java.text.Normalizer
@@ -228,6 +229,15 @@ sealed interface ProgramsImportResult {
     data object DatabaseError : ProgramsImportResult
 }
 
+sealed interface StartProgramSessionResult {
+    data object Started : StartProgramSessionResult
+    data object AlreadyActive : StartProgramSessionResult
+    data object AlreadyCompleted : StartProgramSessionResult
+    data object ExistingUnrelatedDraft : StartProgramSessionResult
+    data object NotAvailable : StartProgramSessionResult
+    data class Error(val message: String) : StartProgramSessionResult
+}
+
 private class SyncLifecycleConflict(val ownerId: String) : RuntimeException()
 private class ProgramsImportInvalid(message: String) : RuntimeException(message)
 
@@ -486,16 +496,59 @@ class TrainlogRepository(
         jsonHasUniqueObjectKeys(json)
 
     /** Captures Android-owned generation artifacts from one read snapshot. */
-    internal fun captureSyncGenerationArtifacts(afterFirstArtifact: (() -> Unit)? = null): Map<String, String> =
-        inSyncGenerationTransaction {
-            val artifacts=linkedMapOf("catalog" to buildPcCatalogJson())
-            afterFirstArtifact?.invoke()
-            artifacts["history"]=buildMobileExport(4, true);artifacts["execution-drafts"]=buildExecutionDraftExportV1Json()
-            artifacts["exercise-aliases"]=buildExerciseAliasesJson();artifacts["exercise-profile-state"]=buildExerciseProfileStateJson()
-            artifacts["equipment-definitions"]=buildEquipmentDefinitionsJson(true);artifacts["equipment-associations"]=buildEquipmentAssociationsJson()
-            artifacts["body-zones"]=buildExerciseBodyZonesJson(true);artifacts["feedback"]=buildTrainingFeedbackJson(true)
-            artifacts["causal-deletions"]=buildCausalDeletionExportV1Json();artifacts
+    internal fun captureSyncGenerationArtifacts(
+        afterFirstArtifact: (() -> Unit)? = null,
+    ): Map<String, String> = inSyncGenerationTransaction {
+        val artifacts = linkedMapOf("catalog" to buildPcCatalogJson())
+        afterFirstArtifact?.invoke()
+        artifacts["history"] = buildMobileExport(4, true)
+        artifacts["execution-drafts"] = buildExecutionDraftExportV1Json()
+        artifacts["exercise-aliases"] = buildExerciseAliasesJson()
+        artifacts["exercise-profile-state"] = buildExerciseProfileStateJson()
+        artifacts["equipment-definitions"] = buildEquipmentDefinitionsJson(true)
+        artifacts["equipment-associations"] = buildEquipmentAssociationsJson()
+        artifacts["body-zones"] = buildExerciseBodyZonesJson(true)
+        artifacts["feedback"] = buildTrainingFeedbackJson(true)
+        artifacts["causal-deletions"] = buildCausalDeletionExportV1Json()
+        artifacts["program-executions"] = buildProgramExecutionsV1Json()
+        artifacts
+    }
+
+    /**
+     * Publishes only stable provenance facts; program definitions remain
+     * desktop-owned and are never reconstructed from Android session content.
+     */
+    internal fun buildProgramExecutionsV1Json(): String {
+        val executions = JSONArray()
+        val db = database.readableDatabase
+        db.rawQuery(
+            "SELECT source_program_id,source_program_session_id,session_id,'completed'," +
+                "COALESCE(ended_at,started_at) FROM sessions " +
+                "WHERE source_program_id IS NOT NULL " +
+                "UNION ALL " +
+                "SELECT source_program_id,source_program_session_id,session_id,'in_progress'," +
+                "updated_at FROM active_session_draft WHERE source_program_id IS NOT NULL " +
+                "ORDER BY 1,2",
+            null,
+        ).use { cursor ->
+            while (cursor.moveToNext()) {
+                executions.put(
+                    JSONObject()
+                        .put("program_id", cursor.getString(0))
+                        .put("program_session_id", cursor.getString(1))
+                        .put("session_id", cursor.getString(2))
+                        .put("state", cursor.getString(3))
+                        .put("observed_at", cursor.getString(4)),
+                )
+            }
         }
+        return JSONObject()
+            .put("format", "trainlog-program-executions")
+            .put("version", 1)
+            .put("generated_at", OffsetDateTime.now().toString())
+            .put("executions", executions)
+            .toString()
+    }
 
     /** Direction-neutral stable-identity catalogue used before generation history. */
     internal fun buildPcCatalogJson(): String {
@@ -2305,6 +2358,9 @@ class TrainlogRepository(
             } ||
             (draft.sourceSessionId != null &&
                 (draft.sourceSessionId.isBlank() || draft.sessionType != SessionType.MAX_TEST)) ||
+            (draft.sourceProgramId == null) != (draft.sourceProgramSessionId == null) ||
+            draft.sourceProgramId?.isBlank() == true ||
+            draft.sourceProgramSessionId?.isBlank() == true ||
             /* exercise_id identifies the catalogue movement. Repeated passages
              * are valid; only their stable occurrence IDs must be unique. */
             draft.exercises
@@ -2456,6 +2512,18 @@ class TrainlogRepository(
                     forcedStartedAt = active.draft.startedAt,
                 )
 
+            /* INVARIANT: completion moves the exact Program provenance from
+             * the singleton draft to history in the same transaction. */
+            db.execSQL(
+                "UPDATE sessions SET source_program_id=?," +
+                    "source_program_session_id=? WHERE session_id=?",
+                arrayOf(
+                    active.draft.sourceProgramId,
+                    active.draft.sourceProgramSessionId,
+                    sessionId,
+                ),
+            )
+
             /* CONTRACT: lifecycle transition changes table ownership, not the
              * stable note owner. Copy caches while causal state remains keyed
              * by session_id/entry_id; rollback covers every child. */
@@ -7095,7 +7163,9 @@ class TrainlogRepository(
                     d.session_id,
                     d.revision_id,
                     d.parent_revision_id,
-                    d.started_at
+                    d.started_at,
+                    d.source_program_id,
+                    d.source_program_session_id
                 FROM active_session_draft AS d
                 LEFT JOIN exercises AS e
                     ON e.id = d.selected_exercise_row_id
@@ -7140,6 +7210,8 @@ class TrainlogRepository(
                         revisionId = cursor.getString(19),
                         parentRevisionId = if (cursor.isNull(20)) null else cursor.getString(20),
                         startedAt = if (cursor.isNull(21)) null else cursor.getString(21),
+                        sourceProgramId = if (cursor.isNull(22)) null else cursor.getString(22),
+                        sourceProgramSessionId = if (cursor.isNull(23)) null else cursor.getString(23),
                         updatedAt =
                             cursor.getString(6),
                         warning =
@@ -7323,6 +7395,8 @@ class TrainlogRepository(
                 exercises = exercises,
                 sessionType = header.sessionType,
                 sourceSessionId = header.sourceSessionId,
+                sourceProgramId = header.sourceProgramId,
+                sourceProgramSessionId = header.sourceProgramSessionId,
                 form = header.form,
                 updatedAt = header.updatedAt,
             ),
@@ -7351,6 +7425,8 @@ class TrainlogRepository(
                 put("revision_id", draft.revisionId)
                 putOptionalString("parent_revision_id", draft.parentRevisionId)
                 putOptionalString("source_session_id", draft.sourceSessionId)
+                putOptionalString("source_program_id", draft.sourceProgramId)
+                putOptionalString("source_program_session_id", draft.sourceProgramSessionId)
                 putOptionalString("selected_equipment_id", draft.form.selectedEquipmentId)
                 put("weight_text", draft.form.weightText)
                 put("max_weight_text", draft.form.maxWeightText)
@@ -7852,6 +7928,8 @@ class TrainlogRepository(
         val sessionType: SessionType,
         val form: SessionDraftForm,
         val sourceSessionId: String?,
+        val sourceProgramId: String?,
+        val sourceProgramSessionId: String?,
         val sessionId: String?,
         val revisionId: String,
         val parentRevisionId: String?,
@@ -8339,12 +8417,15 @@ class TrainlogRepository(
                         )
                     }
                 }
+                val execution = programSessionExecution(db, programId, sessionId)
                 sessions += SyncedProgramSession(
                     sessionId,
                     sessionCursor.getString(1),
                     sessionCursor.getString(2),
                     if (sessionCursor.isNull(3)) null else sessionCursor.getString(3),
                     if (sessionCursor.isNull(4)) null else sessionCursor.getString(4),
+                    execution.first,
+                    execution.second,
                     entries,
                 )
             }
@@ -8360,6 +8441,141 @@ class TrainlogRepository(
         )
     }
 
+    private fun programSessionExecution(
+        db: SQLiteDatabase,
+        programId: String,
+        programSessionId: String,
+    ): Pair<ProgramSessionExecutionState, String?> {
+        val completed = db.rawQuery(
+            "SELECT session_id FROM sessions WHERE source_program_id=? AND " +
+                "source_program_session_id=? LIMIT 2",
+            arrayOf(programId, programSessionId),
+        ).use { cursor ->
+            if (!cursor.moveToFirst()) null else cursor.getString(0).also {
+                check(!cursor.moveToNext()) { "Duplicate Program session execution." }
+            }
+        }
+        if (completed != null) {
+            return ProgramSessionExecutionState.COMPLETED to completed
+        }
+        val active = db.rawQuery(
+            "SELECT session_id FROM active_session_draft WHERE id=1 AND " +
+                "source_program_id=? AND source_program_session_id=?",
+            arrayOf(programId, programSessionId),
+        ).use { cursor -> if (cursor.moveToFirst()) cursor.getString(0) else null }
+        return if (active == null) {
+            ProgramSessionExecutionState.TODO to null
+        } else {
+            ProgramSessionExecutionState.IN_PROGRESS to active
+        }
+    }
+
+    /**
+     * Starts exactly one Program session from stable provenance.
+     *
+     * The singleton draft and provenance lookup share one transaction. Replay
+     * returns the existing draft, completed provenance is terminal, and an
+     * unrelated draft is never overwritten.
+     */
+    fun startSyncedProgramSession(
+        programId: String,
+        programSessionId: String,
+    ): StartProgramSessionResult {
+        val db = database.writableDatabase
+        return try {
+            db.beginTransaction()
+            try {
+                val available = db.rawQuery(
+                    "SELECT s.session_type FROM synced_program_sessions s " +
+                        "JOIN synced_programs p ON p.program_id=s.program_id " +
+                        "WHERE p.program_id=? AND s.program_session_id=? AND p.state='active'",
+                    arrayOf(programId, programSessionId),
+                ).use { cursor -> if (cursor.moveToFirst()) cursor.getString(0) else null }
+                    ?: return StartProgramSessionResult.NotAvailable
+
+                val execution = programSessionExecution(db, programId, programSessionId)
+                if (execution.first == ProgramSessionExecutionState.COMPLETED) {
+                    return StartProgramSessionResult.AlreadyCompleted
+                }
+                if (execution.first == ProgramSessionExecutionState.IN_PROGRESS) {
+                    return StartProgramSessionResult.AlreadyActive
+                }
+                val occupied = db.rawQuery(
+                    "SELECT 1 FROM active_session_draft WHERE id=1",
+                    null,
+                ).use { it.moveToFirst() }
+                if (occupied) {
+                    return StartProgramSessionResult.ExistingUnrelatedDraft
+                }
+
+                val occurrences = readSyncedProgramOccurrences(db, programSessionId)
+                check(occurrences.isNotEmpty()) { "Program session has no executable occurrence." }
+                val type = if (available == SessionType.MAX_TEST.wireValue) {
+                    SessionType.MAX_TEST
+                } else {
+                    SessionType.TRAINING
+                }
+                persistActiveSessionDraft(
+                    db,
+                    ActiveSessionDraft(
+                        sessionId = "se_${UUID.randomUUID()}",
+                        revisionId = "dr_${UUID.randomUUID()}",
+                        startedAt = OffsetDateTime.now().toString(),
+                        exercises = occurrences,
+                        sessionType = type,
+                        sourceProgramId = programId,
+                        sourceProgramSessionId = programSessionId,
+                    ),
+                )
+                db.setTransactionSuccessful()
+                StartProgramSessionResult.Started
+            } finally {
+                db.endTransaction()
+            }
+        } catch (error: Exception) {
+            StartProgramSessionResult.Error(
+                error.message ?: "Program session could not be started.",
+            )
+        }
+    }
+
+    private fun readSyncedProgramOccurrences(
+        db: SQLiteDatabase,
+        programSessionId: String,
+    ): List<SessionExerciseDraft> = buildList {
+        db.rawQuery(
+            "SELECT pe.entry_id,pe.exercise_id,pe.equipment_id,pe.load_mode," +
+                "pe.rest_seconds,pe.target_sets,pe.target_reps," +
+                "pe.target_duration_seconds,pe.target_weight_kg " +
+                "FROM synced_program_entries pe WHERE pe.program_session_id=? " +
+                "ORDER BY pe.position,pe.entry_id",
+            arrayOf(programSessionId),
+        ).use { cursor ->
+            while (cursor.moveToNext()) {
+                val exercise = readExerciseProfileExact(db, resolveExerciseId(db, cursor.getString(1)))
+                    ?: error("Program exercise is unavailable: ${cursor.getString(1)}")
+                val equipmentId = if (cursor.isNull(2)) null else cursor.getString(2)
+                check(equipmentId == null || lookupEquipmentRowIdOrNull(db, equipmentId) != null) {
+                    "Program equipment is unavailable: $equipmentId"
+                }
+                add(
+                    SessionExerciseDraft(
+                        exercise = exercise,
+                        equipmentId = equipmentId,
+                        plan = SessionExercisePlan(
+                            sets = if (cursor.isNull(5)) 0 else cursor.getInt(5),
+                            reps = if (cursor.isNull(6)) null else cursor.getInt(6),
+                            durationSeconds = if (cursor.isNull(7)) null else cursor.getInt(7),
+                            weightKg = if (cursor.isNull(8)) null else cursor.getDouble(8),
+                            loadMode = SessionLoadMode.fromWire(cursor.getString(3)),
+                            restSeconds = cursor.getInt(4),
+                        ),
+                    ),
+                )
+            }
+        }
+    }
+
     private fun normalizeName(
         value: String,
     ): String {
@@ -8538,7 +8754,7 @@ private class TrainlogDatabaseHelper(
             appContext,
     databaseName,
     null,
-    24,
+    25,
 ) {
     override fun onConfigure(
         db: SQLiteDatabase,
@@ -8587,6 +8803,7 @@ private class TrainlogDatabaseHelper(
         createSessionPreparationTables(db)
         createSessionPreparationWithdrawalTable(db)
         createSyncedProgramTables(db)
+        createProgramExecutionProvenance(db)
         seedEquipment(db)
     }
 
@@ -8784,6 +9001,14 @@ private class TrainlogDatabaseHelper(
             createSyncedProgramTables(db)
             version = 24
         }
+        if (version < 25 && newVersion >= 25) {
+            /* WHY: completion state must follow durable provenance, never a
+             * title, date, position, or content heuristic. CONTRACT: v25 adds
+             * nullable paired identities to the singleton draft and completed
+             * session. INVARIANT: migration creates no draft or workout. */
+            createProgramExecutionProvenance(db)
+            version = 25
+        }
 
         if (version != newVersion) {
             error(
@@ -8833,6 +9058,23 @@ private class TrainlogDatabaseHelper(
         )
     }
 
+    private fun createProgramExecutionProvenance(db: SQLiteDatabase) {
+        fun addColumn(table: String, name: String) {
+            if (!tableHasColumn(db, table, name)) {
+                db.execSQL("ALTER TABLE $table ADD COLUMN $name TEXT")
+            }
+        }
+        addColumn("active_session_draft", "source_program_id")
+        addColumn("active_session_draft", "source_program_session_id")
+        addColumn("sessions", "source_program_id")
+        addColumn("sessions", "source_program_session_id")
+        db.execSQL(
+            "CREATE UNIQUE INDEX IF NOT EXISTS sessions_program_execution_v25 " +
+                "ON sessions(source_program_id,source_program_session_id) " +
+                "WHERE source_program_id IS NOT NULL",
+        )
+    }
+
     private fun createSyncDataLifecycleTables(db: SQLiteDatabase) {
         fun addColumn(table: String, name: String, declaration: String) {
             if (!tableHasColumn(db, table, name)) {
@@ -9560,7 +9802,13 @@ private class TrainlogDatabaseHelper(
                             'training',
                             'max_test'
                         )
-                    )
+                    ),
+                source_program_id TEXT,
+                source_program_session_id TEXT,
+                CHECK(
+                    (source_program_id IS NULL) =
+                    (source_program_session_id IS NULL)
+                )
             );
             """.trimIndent()
         )
@@ -9794,6 +10042,8 @@ private class TrainlogDatabaseHelper(
                 session_id TEXT UNIQUE,
                 revision_id TEXT NOT NULL DEFAULT 'dr_legacy_v1',
                 parent_revision_id TEXT,
+                source_program_id TEXT,
+                source_program_session_id TEXT,
                 notes TEXT CHECK(notes IS NULL OR length(CAST(notes AS BLOB)) <= 4096)
             );
             """.trimIndent()

android/app/src/main/java/com/labfytools/trainlog/model/ProgramModels.kt

@@ -26,9 +26,17 @@ data class SyncedProgramSession(
     val sessionType: String,
     val plannedFor: String?,
     val note: String?,
+    val executionState: ProgramSessionExecutionState,
+    val executionSessionId: String?,
     val occurrences: List<SyncedProgramOccurrence>,
 )
 
+enum class ProgramSessionExecutionState {
+    TODO,
+    IN_PROGRESS,
+    COMPLETED,
+}
+
 data class SyncedProgramOccurrence(
     val entryId: String,
     val exerciseId: String,

android/app/src/main/java/com/labfytools/trainlog/model/SessionModels.kt

@@ -112,6 +112,9 @@ data class ActiveSessionDraft(
     val sessionType: SessionType = SessionType.TRAINING,
     /** Existing max_test session updated atomically on finalization, if any. */
     val sourceSessionId: String? = null,
+    /** Stable desktop-owned Program provenance; both values are present or absent. */
+    val sourceProgramId: String? = null,
+    val sourceProgramSessionId: String? = null,
     val form: SessionDraftForm = SessionDraftForm(),
     val updatedAt: String = "",
 )

android/app/src/main/java/com/labfytools/trainlog/ui/ProgramScreens.kt

@@ -1,10 +1,17 @@
 package com.labfytools.trainlog.ui
 
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.testTag
 import com.labfytools.trainlog.R
+import com.labfytools.trainlog.data.StartProgramSessionResult
 import com.labfytools.trainlog.data.TrainlogRepository
+import com.labfytools.trainlog.model.ProgramSessionExecutionState
 
 /** Presentation-only list for the desktop-owned Programs projection. */
 @Composable
@@ -37,11 +44,36 @@ fun ProgramsScreen(repository: TrainlogRepository, onOpen: (String) -> Unit) {
     }
 }
 
-/** CONTRACT: this route exposes no start, edit, archive, or delete mutation. */
+/** Program definitions remain read-only; only the local execution draft mutates. */
 @Composable
-fun ProgramDetailScreen(repository: TrainlogRepository, programId: String) {
+fun ProgramDetailScreen(
+    repository: TrainlogRepository,
+    programId: String,
+    onOpenActiveSession: () -> Unit,
+) {
     val strings = localizedContext()
-    val program = repository.getSyncedProgram(programId)
+    var revision by remember { mutableIntStateOf(0) }
+    var message by remember { mutableStateOf<String?>(null) }
+    val program = remember(programId, revision) { repository.getSyncedProgram(programId) }
+
+    fun start(programSessionId: String) {
+        when (val result = repository.startSyncedProgramSession(programId, programSessionId)) {
+            StartProgramSessionResult.Started,
+            StartProgramSessionResult.AlreadyActive -> onOpenActiveSession()
+            StartProgramSessionResult.AlreadyCompleted -> {
+                message = strings.getString(R.string.program_session_completed_detail)
+                revision++
+            }
+            StartProgramSessionResult.ExistingUnrelatedDraft -> {
+                message = strings.getString(R.string.existing_draft_warning)
+            }
+            StartProgramSessionResult.NotAvailable -> {
+                message = strings.getString(R.string.program_session_unavailable)
+            }
+            is StartProgramSessionResult.Error -> message = result.message
+        }
+    }
+
     TrainlogScreen(strings.getString(R.string.route_program_detail)) {
         if (program == null) {
             TrainlogInfo(strings.getString(R.string.program_not_found))
@@ -53,8 +85,17 @@ fun ProgramDetailScreen(repository: TrainlogRepository, programId: String) {
             program.endDate?.let { TrainlogInfo(strings.getString(R.string.program_end_date, formatDate(it))) }
             program.note?.let { TrainlogInfo(it) }
         }
+        message?.let { TrainlogInfo(it) }
         program.sessions.forEachIndexed { index, session ->
-            TrainlogFrame("${index + 1}. ${session.title}") {
+            var expanded by remember(session.programSessionId) { mutableStateOf(false) }
+            val completed = session.executionState == ProgramSessionExecutionState.COMPLETED
+            TrainlogFrame("${index + 1}. ${session.title}", active = completed) {
+                val stateLabel = when (session.executionState) {
+                    ProgramSessionExecutionState.TODO -> R.string.program_session_todo
+                    ProgramSessionExecutionState.IN_PROGRESS -> R.string.program_session_in_progress
+                    ProgramSessionExecutionState.COMPLETED -> R.string.program_session_completed
+                }
+                TrainlogInfo(strings.getString(stateLabel))
                 TrainlogInfo(
                     listOfNotNull(
                         strings.getString(if (session.sessionType == "max_test") R.string.session_max_test else R.string.session_training),
@@ -62,7 +103,30 @@ fun ProgramDetailScreen(repository: TrainlogRepository, programId: String) {
                     ).joinToString(" · "),
                 )
                 session.note?.let { TrainlogInfo(it) }
-                session.occurrences.forEachIndexed { occurrenceIndex, occurrence ->
+                TrainlogButton(
+                    strings.getString(
+                        if (expanded) R.string.program_session_hide_occurrences
+                        else R.string.program_session_show_occurrences,
+                    ),
+                    { expanded = !expanded },
+                    Modifier.testTag("program-session-toggle-${session.programSessionId}"),
+                )
+                when (session.executionState) {
+                    ProgramSessionExecutionState.TODO -> TrainlogButton(
+                        strings.getString(R.string.program_session_start),
+                        { start(session.programSessionId) },
+                        Modifier.testTag("program-session-start-${session.programSessionId}"),
+                    )
+                    ProgramSessionExecutionState.IN_PROGRESS -> TrainlogButton(
+                        strings.getString(R.string.program_session_resume),
+                        onOpenActiveSession,
+                        Modifier.testTag("program-session-resume-${session.programSessionId}"),
+                    )
+                    ProgramSessionExecutionState.COMPLETED -> TrainlogInfo(
+                        strings.getString(R.string.program_session_completed_detail),
+                    )
+                }
+                if (expanded) session.occurrences.forEachIndexed { occurrenceIndex, occurrence ->
                     val target = occurrence.targetReps?.let { strings.getString(R.string.program_target_reps, it) }
                         ?: occurrence.targetDurationSeconds?.let { strings.getString(R.string.program_target_duration, it) }.orEmpty()
                     val sets = occurrence.targetSets?.let { strings.getString(R.string.program_target_sets, it) }.orEmpty()

android/app/src/main/java/com/labfytools/trainlog/ui/SectionScreens.kt

@@ -14,6 +14,7 @@ import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.height
@@ -68,6 +69,7 @@ fun SessionsHub(
         }
         TrainlogButton(strings.getString(R.string.route_completed_sessions), onHistory,
             Modifier.fillMaxWidth().testTag("sessions-history-action"))
+        Spacer(Modifier.height(16.dp).testTag("sessions-programs-spacing"))
         TrainlogButton(strings.getString(R.string.route_programs), onPrograms,
             Modifier.fillMaxWidth().testTag("sessions-programs-action"))
     }

android/app/src/main/java/com/labfytools/trainlog/ui/TrainlogApp.kt

@@ -125,7 +125,10 @@ fun TrainlogApp(repository: TrainlogRepository, exporter: SyncExporter, inbox: S
             )
             AppRoute.CompletedSessions -> HistoryScreen(repository, { back() }) { open(AppRoute.SessionDetail(it)) }
             AppRoute.Programs -> ProgramsScreen(repository) { open(AppRoute.ProgramDetail(it)) }
-            is AppRoute.ProgramDetail -> ProgramDetailScreen(repository, route.programId)
+            is AppRoute.ProgramDetail -> ProgramDetailScreen(repository, route.programId) {
+                draftRevision++
+                open(AppRoute.SessionEditor)
+            }
             is AppRoute.SessionDetail -> SessionDetailScreen(repository, route.sessionId, { back() }, { open(AppRoute.SessionCorrection(route.sessionId)) }) { draftRevision++; open(AppRoute.SessionEditor) }
             is AppRoute.SessionCorrection -> CompletedSessionCorrectionScreen(repository, route.sessionId) { saved ->
                 if (saved) exportSnapshot()

android/app/src/main/res/values-en/strings.xml

@@ -25,6 +25,15 @@
     <string name="program_target_reps">%1$d repetitions</string>
     <string name="program_target_duration">%1$d s</string>
     <string name="program_target_weight">%1$.1f kg</string>
+    <string name="program_session_todo">To do</string>
+    <string name="program_session_in_progress">In progress</string>
+    <string name="program_session_completed">Completed</string>
+    <string name="program_session_start">Start</string>
+    <string name="program_session_resume">Resume session</string>
+    <string name="program_session_completed_detail">This session has already been completed.</string>
+    <string name="program_session_unavailable">This session can no longer be started.</string>
+    <string name="program_session_show_occurrences">Show exercises</string>
+    <string name="program_session_hide_occurrences">Hide exercises</string>
     <plurals name="program_session_count"><item quantity="one">%d session</item><item quantity="other">%d sessions</item></plurals>
     <string name="route_session_detail">Session details</string>
     <string name="route_session_correction">Edit session</string>

android/app/src/main/res/values/strings.xml

@@ -25,6 +25,15 @@
     <string name="program_target_reps">%1$d répétitions</string>
     <string name="program_target_duration">%1$d s</string>
     <string name="program_target_weight">%1$.1f kg</string>
+    <string name="program_session_todo">À faire</string>
+    <string name="program_session_in_progress">En cours</string>
+    <string name="program_session_completed">Effectuée</string>
+    <string name="program_session_start">Démarrer</string>
+    <string name="program_session_resume">Reprendre la séance</string>
+    <string name="program_session_completed_detail">Cette séance a déjà été effectuée.</string>
+    <string name="program_session_unavailable">Cette séance ne peut plus être démarrée.</string>
+    <string name="program_session_show_occurrences">Voir les exercices</string>
+    <string name="program_session_hide_occurrences">Masquer les exercices</string>
     <plurals name="program_session_count"><item quantity="one">%d séance</item><item quantity="other">%d séances</item></plurals>
     <string name="route_session_detail">Détail de la séance</string>
     <string name="route_session_correction">Modifier la séance</string>

android/app/src/test/java/com/labfytools/trainlog/data/AndroidV10PlanningMigrationTest.kt

@@ -66,7 +66,7 @@ class AndroidV10PlanningMigrationTest {
 
         TrainlogRepository(context, name).useForTest { it.listSessions() }
         SQLiteDatabase.openDatabase(path.path, null, SQLiteDatabase.OPEN_READONLY).use { db ->
-            assertEquals(24, scalar(db, "PRAGMA user_version"))
+            assertEquals(25, scalar(db, "PRAGMA user_version"))
             for (table in listOf("session_exercises", "draft_session_exercises")) {
                 assertEquals(6, scalar(db, "SELECT COUNT(*) FROM pragma_table_info('$table') WHERE name IN ('load_mode','rest_seconds','target_sets','target_reps','target_duration_seconds','target_weight_kg')"))
                 assertEquals(0, scalar(db, "SELECT COUNT(*) FROM $table WHERE load_mode<>'none' OR rest_seconds<>0 OR target_sets IS NOT NULL OR target_reps IS NOT NULL OR target_duration_seconds IS NOT NULL OR target_weight_kg IS NOT NULL"))

android/app/src/test/java/com/labfytools/trainlog/data/AndroidV11ExerciseAliasMigrationTest.kt

@@ -69,7 +69,7 @@ class AndroidV11ExerciseAliasMigrationTest {
             migrated.close()
         }
         SQLiteDatabase.openDatabase(path, null, SQLiteDatabase.OPEN_READONLY).use { db ->
-            assertEquals(24, scalar(db, "PRAGMA user_version"))
+            assertEquals(25, scalar(db, "PRAGMA user_version"))
             /* v13 intentionally adds the frozen machine identities and
              * exercise-owned metadata; all non-exercise facts stay exact. */
             val after = snapshot(db).filterKeys { it !in setOf("exercise_aliases", "exercise_profile_state", "exercise_profile_revisions") }

android/app/src/test/java/com/labfytools/trainlog/data/AndroidV16AiSessionDraftMigrationTest.kt

@@ -78,7 +78,7 @@ class AndroidV16AiSessionDraftMigrationTest {
             migrated.close()
         }
         SQLiteDatabase.openDatabase(path, null, SQLiteDatabase.OPEN_READONLY).use { db ->
-            assertEquals(24, scalar(db, "PRAGMA user_version"))
+            assertEquals(25, scalar(db, "PRAGMA user_version"))
             assertEquals(before, listOf(
                 scalar(db, "SELECT COUNT(*) FROM sessions"),
                 scalar(db, "SELECT COUNT(*) FROM performed_sets"),

android/app/src/test/java/com/labfytools/trainlog/data/AndroidV25ProgramExecutionMigrationTest.kt

@@ -0,0 +1,93 @@
+package com.labfytools.trainlog.data
+
+import android.content.Context
+import android.database.sqlite.SQLiteDatabase
+import androidx.test.core.app.ApplicationProvider
+import com.labfytools.trainlog.model.ActiveSessionDraft
+import com.labfytools.trainlog.model.NewExerciseProfile
+import com.labfytools.trainlog.model.RecordingMode
+import com.labfytools.trainlog.model.SessionExerciseDraft
+import com.labfytools.trainlog.model.SessionExercisePlan
+import com.labfytools.trainlog.model.TrackingMode
+import java.util.UUID
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+
+/** Additive v24 -> v25 provenance migration preserves the singleton draft. */
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [35])
+class AndroidV25ProgramExecutionMigrationTest {
+    private val context: Context = ApplicationProvider.getApplicationContext()
+
+    @Test
+    fun v24FixturePreservesDraftAndInventsNoProgramProvenance() {
+        val name = "program-execution-v24-${UUID.randomUUID()}.db"
+        val first = TrainlogRepository(context, name)
+        val exercise = (
+            first.createExercise(
+                NewExerciseProfile(
+                    "Migration fixture",
+                    RecordingMode.SETS,
+                    TrackingMode.REPS,
+                    0,
+                ),
+            ) as CreateExerciseResult.Created
+        ).exercise
+        assertEquals(
+            ActiveDraftMutationResult.Saved,
+            first.saveActiveSessionDraft(
+                ActiveSessionDraft(
+                    exercises = listOf(
+                        SessionExerciseDraft(
+                            exercise = exercise,
+                            plan = SessionExercisePlan(sets = 3, reps = 8),
+                        ),
+                    ),
+                ),
+            ),
+        )
+        first.close()
+
+        val path = context.getDatabasePath(name).path
+        SQLiteDatabase.openDatabase(path, null, SQLiteDatabase.OPEN_READWRITE).use { db ->
+            /* The published-unreleased fixture may already contain additive
+             * columns; lowering only user_version proves migration replay is safe. */
+            db.execSQL("PRAGMA user_version=24")
+        }
+
+        val reopened = TrainlogRepository(context, name)
+        try {
+            val draft = (reopened.loadActiveSessionDraft() as ActiveDraftLoadResult.Loaded).draft
+            assertEquals(null, draft.sourceProgramId)
+            assertEquals(null, draft.sourceProgramSessionId)
+        } finally {
+            reopened.close()
+        }
+        SQLiteDatabase.openDatabase(path, null, SQLiteDatabase.OPEN_READONLY).use { db ->
+            assertEquals(25, scalar(db, "PRAGMA user_version"))
+            assertEquals(0, scalar(db, "SELECT COUNT(*) FROM sessions WHERE source_program_id IS NOT NULL"))
+            assertEquals("ok", text(db, "PRAGMA integrity_check"))
+            db.rawQuery("PRAGMA foreign_key_check", null).use { cursor ->
+                assertFalse(cursor.moveToFirst())
+            }
+        }
+        context.deleteDatabase(name)
+    }
+
+    private fun scalar(db: SQLiteDatabase, sql: String): Int =
+        db.rawQuery(sql, null).use { cursor ->
+            assertTrue(cursor.moveToFirst())
+            cursor.getInt(0)
+        }
+
+    private fun text(db: SQLiteDatabase, sql: String): String =
+        db.rawQuery(sql, null).use { cursor ->
+            assertTrue(cursor.moveToFirst())
+            cursor.getString(0)
+        }
+}

android/app/src/test/java/com/labfytools/trainlog/data/BodyZonesTest.kt

@@ -328,7 +328,7 @@ class BodyZonesTest {
         SQLiteDatabase.openDatabase(context.getDatabasePath(name).path, null,
             SQLiteDatabase.OPEN_READONLY).use { db ->
             db.rawQuery("PRAGMA user_version", null).use { cursor ->
-                assertTrue(cursor.moveToFirst()); assertEquals(24, cursor.getInt(0))
+                assertTrue(cursor.moveToFirst()); assertEquals(25, cursor.getInt(0))
             }
             db.rawQuery("SELECT id FROM exercises", null).use { cursor ->
                 assertTrue(cursor.moveToFirst()); assertEquals(42L, cursor.getLong(0))

android/app/src/test/java/com/labfytools/trainlog/data/BridgeBackupMigrationTest.kt

@@ -43,7 +43,7 @@ class BridgeBackupMigrationTest {
                     null,
                     android.database.sqlite.SQLiteDatabase.OPEN_READONLY,
                 )
-                .use { assertEquals(24, it.version) }
+                .use { assertEquals(25, it.version) }
         } finally {
             repository.close()
             context.deleteDatabase(name)

android/app/src/test/java/com/labfytools/trainlog/data/ProgramsProjectionRepositoryTest.kt

@@ -3,6 +3,8 @@ package com.labfytools.trainlog.data
 import android.content.Context
 import androidx.test.core.app.ApplicationProvider
 import java.util.UUID
+import com.labfytools.trainlog.model.ProgramSessionExecutionState
+import com.labfytools.trainlog.model.SessionSetDraft
 import org.json.JSONArray
 import org.json.JSONObject
 import org.junit.Assert.assertEquals
@@ -124,4 +126,72 @@ class ProgramsProjectionRepositoryTest {
             context.deleteDatabase(name)
         }
     }
+
+    @Test
+    fun programSessionStartsResumesCompletesAndKeepsProvenanceAcrossRestart() {
+        val name = "program-execution-${UUID.randomUUID()}.db"
+        var repository = TrainlogRepository(context, name)
+        try {
+            val catalog = JSONObject()
+                .put("format", "trainlog-pc-catalog")
+                .put("version", 1)
+                .put("exercises", JSONArray().put(
+                    JSONObject()
+                        .put("exercise_id", "ex_eeeeeeee-eeee-4eee-8eee-eeeeeeeeeeee")
+                        .put("name", "Exercise fixture")
+                        .put("recording_mode", "sets")
+                        .put("tracking_mode", "reps")
+                        .put("data_fields", 0),
+                ))
+                .toString()
+            assertTrue(repository.applyPcCatalogJson(catalog) is PcCatalogImportResult.Applied)
+            repository.applyProgramsV1Json(artifact(JSONArray().put(program())))
+            val programId = "pg_aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa"
+            val programSessionId = "pgs_cccccccc-cccc-4ccc-8ccc-cccccccccccc"
+
+            assertEquals(
+                StartProgramSessionResult.Started,
+                repository.startSyncedProgramSession(programId, programSessionId),
+            )
+            assertEquals(
+                StartProgramSessionResult.AlreadyActive,
+                repository.startSyncedProgramSession(programId, programSessionId),
+            )
+            val active = (repository.loadActiveSessionDraft() as ActiveDraftLoadResult.Loaded).draft
+            assertEquals(programId, active.sourceProgramId)
+            assertEquals(programSessionId, active.sourceProgramSessionId)
+            val performed = active.copy(
+                exercises = active.exercises.map { occurrence ->
+                    occurrence.copy(sets = listOf(SessionSetDraft(reps = 8, weightKg = 40.0)))
+                },
+            )
+            assertEquals(ActiveDraftMutationResult.Saved, repository.saveActiveSessionDraft(performed))
+            assertTrue(repository.finalizeActiveSessionDraft() is FinalizeActiveDraftResult.Saved)
+            assertEquals(
+                ProgramSessionExecutionState.COMPLETED,
+                repository.getSyncedProgram(programId)!!.sessions.single().executionState,
+            )
+            assertEquals(
+                StartProgramSessionResult.AlreadyCompleted,
+                repository.startSyncedProgramSession(programId, programSessionId),
+            )
+            val exported = JSONObject(repository.buildProgramExecutionsV1Json())
+            val execution = exported.getJSONArray("executions").getJSONObject(0)
+            assertEquals("completed", execution.getString("state"))
+            assertEquals(programSessionId, execution.getString("program_session_id"))
+        } finally {
+            repository.close()
+        }
+
+        repository = TrainlogRepository(context, name)
+        try {
+            val detail = repository.listSyncedPrograms().single()
+            assertEquals(1, detail.sessionCount)
+            assertTrue(repository.loadActiveSessionDraft() is ActiveDraftLoadResult.None)
+            assertEquals(1, repository.listSessions().size)
+        } finally {
+            repository.close()
+            context.deleteDatabase(name)
+        }
+    }
 }

android/app/src/test/java/com/labfytools/trainlog/data/SessionPreparationExchangeTest.kt

@@ -260,7 +260,7 @@ class SessionPreparationExchangeTest {
             repository = TrainlogRepository(context, name)
             assertEquals(1, repository.listPreparedSessions().size)
             repository.close()
-            assertEquals("24", scalarText(name, "PRAGMA user_version"))
+            assertEquals("25", scalarText(name, "PRAGMA user_version"))
             assertEquals(
                 "0",
                 scalarText(name, "SELECT COUNT(*) FROM session_preparation_withdrawals"),

android/app/src/test/java/com/labfytools/trainlog/data/SyncGenerationServiceTest.kt

@@ -149,6 +149,63 @@ class SyncGenerationServiceTest {
                 acceptAndroidAck(liveGenerationId, liveAck).contains("ACK_ACCEPT=acknowledged")
             )
 
+            val programSessionId =
+                "pgs_bbbbbbbb-bbbb-4bbb-8bbb-bbbbbbbbbbbb"
+            assertEquals(
+                StartProgramSessionResult.Started,
+                android.startSyncedProgramSession(programId, programSessionId),
+            )
+            val active =
+                (android.loadActiveSessionDraft() as ActiveDraftLoadResult.Loaded).draft
+            val performed = active.copy(
+                exercises = active.exercises.map { occurrence ->
+                    occurrence.copy(
+                        sets = listOf(SessionSetDraft(reps = 8, weightKg = 40.0)),
+                    )
+                },
+            )
+            assertEquals(
+                ActiveDraftMutationResult.Saved,
+                android.saveActiveSessionDraft(performed),
+            )
+            assertTrue(android.finalizeActiveSessionDraft() is FinalizeActiveDraftResult.Saved)
+            val completedSessionId = android.listSessions().single().sessionId
+            val androidGeneration = service.capture(root, desktopPeer)
+            val androidPublished = service.publish(
+                androidGeneration,
+                java.io.File(root, "android-objects"),
+            )
+            val desktopAck = java.io.File(root, "android-program-execution-ack.json")
+            run(
+                "python3",
+                generationTool,
+                "consume-desktop",
+                androidPublished.absolutePath,
+                "--database",
+                desktopDb.absolutePath,
+                "--ack-output",
+                desktopAck.absolutePath,
+            )
+            assertEquals(
+                "acknowledged",
+                service.acceptAcknowledgement(desktopAck.readBytes()),
+            )
+            assertEquals(
+                "$programSessionId|$completedSessionId|completed",
+                run(
+                    "sqlite3",
+                    desktopDb.absolutePath,
+                    "SELECT program_session_id || '|' || session_id || '|' || state " +
+                        "FROM program_session_executions;",
+                ).trim(),
+            )
+            val completedDetail = run(
+                fixture.absolutePath,
+                desktopDb.absolutePath,
+                "program-detail",
+            )
+            assertTrue(completedDetail.contains("\"execution_state\":\"completed\""))
+
             val deleted =
                 run(
                     fixture.absolutePath,
@@ -329,7 +386,7 @@ class SyncGenerationServiceTest {
                 .use { db ->
                     db.rawQuery("PRAGMA user_version", null).use {
                         assertTrue(it.moveToFirst())
-                        assertEquals(24, it.getInt(0))
+                        assertEquals(25, it.getInt(0))
                     }
                     db.rawQuery("SELECT COUNT(*) FROM exercises", null).use {
                         assertTrue(it.moveToFirst())

android/app/src/test/java/com/labfytools/trainlog/data/TrainlogRepositoryDraftTest.kt

@@ -2260,7 +2260,7 @@ class TrainlogRepositoryDraftTest {
         ).use { db ->
             db.rawQuery("PRAGMA user_version;", null).use { cursor ->
                 assertTrue(cursor.moveToFirst())
-                assertEquals(24, cursor.getInt(0))
+                assertEquals(25, cursor.getInt(0))
             }
             db.rawQuery(
                 "SELECT eq.equipment_id, ps.reps, ps.weight_kg FROM session_exercises se " +
@@ -2387,7 +2387,7 @@ class TrainlogRepositoryDraftTest {
         ).use { db ->
             db.rawQuery("PRAGMA user_version;", null).use { cursor ->
                 assertTrue(cursor.moveToFirst())
-                assertEquals(24, cursor.getInt(0))
+                assertEquals(25, cursor.getInt(0))
             }
             db.rawQuery("SELECT weight_kg FROM performed_sets WHERE id = 1;", null).use { cursor ->
                 assertTrue(cursor.moveToFirst())

docs/android.md

@@ -23,6 +23,13 @@ Sessions without offering import, archive, delete, preparation, or other
 program mutation actions. The projection is separate from capture data, AI
 proposals, manual preparations, and the active-session singleton.
 
+Android schema v25 adds paired nullable Program provenance to the active draft
+and completed session. Starting a Program session allocates one ordinary stable
+execution identity, copies targets without fabricating performed values, and
+respects the existing singleton. Replay resumes the matching draft, refuses an
+unrelated draft, and refuses a second execution after completion. Finalization
+copies the same Program identities into completed history transactionally.
+
 ## 1. Purpose
 
 The Android application is Trainlog's low-friction capture client.
@@ -85,6 +92,12 @@ the projection and deletion state durably, and desktop records the correlated
 ACK before marking the tombstone acknowledged. It changes neither
 `TRAINLOG_FORMAT_V1`, mobile V3, catalog exchange, nor preparation exchange.
 
+Android publishes the separate optional `trainlog-program-executions` V1
+companion in full generations. It contains only stable Program/session/execution
+identities, `in_progress` or `completed`, and an observation timestamp. It does
+not publish Program definitions and therefore does not transfer Program
+ownership to Android. Older consumers may ignore this optional companion.
+
 Completed session occurrences persist an `entry_id`; it is never regenerated
 for exchange. Android schema v14 added feedback roots and completion `ended_at`
 anchors; v15 adds immutable correction history and the separately versioned

docs/current_state.md

@@ -57,8 +57,8 @@ parallel implementation of its rules.
 | Boundary | Current state |
 |---|---|
 | Frozen project exchange | `TRAINLOG_FORMAT_V1=PASS/FROZEN` |
-| Desktop SQLite | schema v26 |
-| Android SQLite | schema v24 |
+| Desktop SQLite | schema v27 |
+| Android SQLite | schema v25 |
 | Mobile snapshot | V3 active; V1/V2 readable legacy inputs; explicit V4 codec staged, not selected by transport |
 | Desktop terminal backend | Notcurses only |
 | Trainlog product version | `0.1.2` development, synchronized across Android and desktop; latest stable release: `v0.1.1` |
@@ -82,6 +82,7 @@ parallel implementation of its rules.
 | Web Sessions V1 | `TRAINLOG_WEB_SESSIONS_V1=PASS/FROZEN` (controlled desktop/Android deployment validated) |
 | Web Sessions deletion and Programs V1 | `TRAINLOG_WEB_SESSIONS_DELETE_AND_PROGRAMS_V1=PASS` (private grouped rollout validated) |
 | Programs presentation, Android projection, and deletion | `TRAINLOG_PROGRAMS_PRESENTATION_ANDROID_DELETE_V1=PASS` (private coordinated deployment and restart/replay validated) |
+| Program execution flow | `TRAINLOG_PROGRAM_EXECUTION_FLOW_V1=IMPLEMENTED_VALIDATED_AWAITING_ROLLOUT` |
 | Sync orchestrator/report V1 | `TRAINLOG_SYNC_ORCHESTRATOR_REPORT_V1=PASS/FROZEN` |
 | Web sync API V1 | `TRAINLOG_WEB_SYNC_API_V1=PASS/FROZEN` |
 | Web sync button V1 | `TRAINLOG_WEB_SYNC_BUTTON_V1=PASS/FROZEN` |
@@ -272,6 +273,14 @@ snapshot plus unacknowledged tombstones under capability `programs-v1`; a
 durable correlated ACK records acknowledgment. It changes neither
 `TRAINLOG_FORMAT_V1`, mobile V3, catalog exchange, nor preparations.
 
+Android schema v25 makes those projected sessions executable through the
+existing durable singleton. Stable paired Program provenance survives draft
+restart and completion. The optional Android-to-desktop
+`trainlog-program-executions` V1 companion records `in_progress` or `completed`
+against desktop schema v27 without transferring ownership of Program
+definitions. Web and Android derive their session state from these persisted
+identities; no display-field heuristic is used.
+
 The private Programs rollout migrated desktop schema v25 to v26 and Android
 schema v23 to v24 after verified backups, then installed the signed
 non-debuggable versionCode 16 APK without uninstalling or clearing data. The

docs/database.md

@@ -1,5 +1,15 @@
 # Desktop database
 
+## Schema v27: durable Program execution provenance
+
+Schema v27 adds `program_session_executions`, the stable link from one
+desktop-owned Program session to its Android execution `session_id`. The state
+advances only from `in_progress` to `completed`; a Program session and an
+execution session are each unique. Completed links are accepted only after the
+referenced completed session has been imported. The migration is additive,
+transactional, creates no execution row, and preserves Program definitions,
+preparations and history unchanged.
+
 ## Schema v26: Programs presentation, Android projection, and logical deletion
 
 Schema v26 adds nullable `programs.deleted_at` and the terminal
@@ -65,8 +75,8 @@ is a later, separately versioned migration.
 ## 1. Status
 
 ```text
-TRAINLOG_DATABASE_SCHEMA_VERSION=26
-DATABASE_SCHEMA_V26=IMPLEMENTED
+TRAINLOG_DATABASE_SCHEMA_VERSION=27
+DATABASE_SCHEMA_V27=IMPLEMENTED
 TRAINLOG_FORMAT_V1=FROZEN
 ```
 
@@ -85,7 +95,7 @@ PRAGMA user_version;
 Current value:
 
 ```text
-26
+27
 ```
 
 The independent actual-set loads documented in the current desktop, Android

docs/reviews/program_execution_flow_v1_evidence.md

@@ -0,0 +1,44 @@
+# Program execution flow V1 validation evidence
+
+Status: `IMPLEMENTED_VALIDATED_AWAITING_ROLLOUT`
+
+This record covers the isolated `program-execution-flow-v1` worktree. It does
+not claim installation, user-database migration, service restart, device smoke
+testing, tag creation, or public release.
+
+## Functional evidence
+
+- Android starts one projected Program session through the production durable
+  singleton, returns the same draft on replay, refuses an unrelated singleton,
+  and refuses a second execution after completion.
+- Finalization retains the stable `program_id`, `program_session_id`, and
+  execution `session_id`; reopening preserves completion and creates no draft.
+- A production full-generation scenario imports `programs-v1` on Android,
+  performs and finalizes the session, publishes `program-executions-v1`, imports
+  completed history and provenance on desktop, accepts the real correlated ACK,
+  and exposes Web `completed` before continuing through deletion and replay.
+- Existing logical Program deletion, tombstone ACK, restart and
+  non-resurrection coverage remains in the same integrated scenario.
+
+## Validation evidence
+
+- Native Meson suite: 87/87 passed.
+- ASan/UBSan Meson suite with Web assets: 89/89 passed.
+- Android JVM suite: 231 passed, 5 intentionally skipped hardware cases.
+- Android debug and private release builds passed; release lint passed.
+- Web Vitest: 94/94 passed; TypeScript and production build passed.
+- Real headless Firefox against the C server passed desktop and exact 390×844
+  Programs flows, including readable state text and deletion confirmation.
+- Populated desktop migration continues from v25 through v27 with identical
+  business projections, integrity `ok`, empty foreign-key check, and an empty
+  execution ledger. Android v24 to v25 migration preserves the active draft and
+  invents no Program provenance.
+- JSON/import validators, `git diff --check`, and
+  `tools/check_changed_c_format.sh main` passed.
+
+## Candidate boundary
+
+The coordinated candidates are built only after the final source commit. Their
+exact paths, source commit, hashes, Android package metadata and signing digest
+belong in the consent-gate report so the archive inventory can bind to the exact
+final HEAD without circular documentation changes.

docs/roadmap.md

@@ -24,7 +24,7 @@ distinction between measured values and estimates.
 
 ## Current baseline
 
-Desktop schema v26, Android schema v24, Notcurses, direct
+Desktop schema v27, Android schema v25, Notcurses, direct
 `Documents/Trainlog` storage, mobile export V3, Training Knowledge V1, Body
 Zones V1, Training Feedback V1/V2, STATS V1, and Session Generator V1 are
 implemented. Session Generator V1 is hidden pending V2. AI session-draft

docs/sync_exchange.md

@@ -145,6 +145,7 @@ does not publish to it or let it override an artifact in the new endpoint.
 | PC -> Android | `trainlog-exercise-aliases-v1.json` | `trainlog-exercise-aliases` v1 |
 | PC -> Android | `trainlog-ai-session-drafts-v1.json` | `trainlog-ai-session-drafts` v1/v2 companion; v2 adds proposal withdrawals |
 | PC -> Android | `programs-v1.json` | optional staged `trainlog-programs` v1 companion: full nondeleted snapshot plus unacknowledged deletion tombstones |
+| Android -> PC | `program-executions-v1.json` | optional `trainlog-program-executions` v1 companion: stable in-progress/completed provenance |
 | Android -> PC agent | `trainlog-sync-request-v1.json` | `trainlog-sync-request` v1 |
 | PC agent -> Android | `trainlog-sync-receipt-v1.json` | `trainlog-sync-receipt` v1 |
 
@@ -165,6 +166,17 @@ V3, `trainlog-pc-catalog` V1, and `trainlog-session-preparations` V2. It does
 not change `TRAINLOG_FORMAT_V1`, active default V3 transport, or preparation
 semantics.
 
+## Optional Program executions companion V1
+
+`trainlog-program-executions` V1 is an Android-to-desktop full-generation
+companion. Android schema v25 emits at most one stable execution fact per
+Program session. Desktop schema v27 validates that the Program/session pair
+exists, imports completed history before accepting a completed fact, and
+permits only the monotonic `in_progress` to `completed` transition. Exact replay
+is idempotent; identity reuse or regression is a hard conflict. Because the
+descriptor is optional, peers predating this companion keep exchanging all
+existing required domains without a capability failure.
+
 `trainlog-exercise-aliases` v1 is the separate EXERCISE_MERGE_V1 identity
 companion. Its root contains exactly `format`, `version`, and `aliases`; every
 entry contains exactly `source_exercise_id` and `canonical_exercise_id` using

docs/tests.md

@@ -75,6 +75,16 @@ no duplication. Python Programs/synchronization suites cover the staged
 companion's full snapshot, unacknowledged tombstone publication, and ACK-driven
 acknowledgment without changing mobile V3, catalog, or preparation artifacts.
 
+Program execution regressions additionally cover Android schema v24 to v25,
+start/replay/singleton protection, target-only draft creation, completion,
+restart persistence and companion serialization. The integrated generation
+test uses the production desktop and Android producers/consumers to import a
+Program, execute one session, import completed history and its V1 provenance,
+acknowledge the correlated generation, expose Web `completed`, then continue
+through Program deletion, restart and old-generation replay without duplication
+or resurrection. The desktop populated migration test now continues through
+schema v27 and proves the new execution ledger starts empty.
+
 `test_web_sessions_browser.py` runs headless Firefox against the embedded
 production assets and C HTTP server with private temporary XDG roots. It creates
 only a synthetic ready preparation and delivery, verifies French then persisted

docs/web_sessions.md

@@ -79,6 +79,12 @@ a preparation from one active program session copies targets and provenance
 into a new manual preparation but creates no delivery, execution or performed
 data. Archived or deleted programs cannot be prepared.
 
+Desktop schema v27 enriches each Program session with a persisted execution
+state. Web displays `À faire`, `Préparée`, `En cours`, or `Effectuée`; completed
+and in-progress states come from stable Android execution provenance, while
+prepared comes from a live derived preparation. No title, date, position or
+content heuristic is used.
+
 The discrete right-edge Program trash action is accessible and opens a
 confirmation dialog that names the program and its consequence. Focus moves
 into that dialog, Escape and Cancel perform no mutation, and focus returns to

tests/test_program_execution_exchange.py

@@ -0,0 +1,100 @@
+#!/usr/bin/env python3
+"""Program-execution companion validation and idempotence regressions."""
+
+import json
+import sqlite3
+import sys
+import tempfile
+import unittest
+from contextlib import closing
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "tools"))
+import program_execution_exchange
+
+
+class ProgramExecutionExchangeTest(unittest.TestCase):
+    def setUp(self):
+        self.temporary = tempfile.TemporaryDirectory()
+        self.database = Path(self.temporary.name) / "trainlog.sqlite"
+        self.artifact = Path(self.temporary.name) / "program-executions-v1.json"
+        with closing(sqlite3.connect(self.database)) as db:
+            db.executescript("""
+                PRAGMA foreign_keys=ON;
+                CREATE TABLE programs(program_id TEXT PRIMARY KEY);
+                CREATE TABLE program_sessions(
+                    program_session_id TEXT PRIMARY KEY,
+                    program_id TEXT NOT NULL REFERENCES programs(program_id));
+                CREATE TABLE sessions(id INTEGER PRIMARY KEY,session_id TEXT UNIQUE);
+                CREATE TABLE program_session_executions(
+                    program_session_id TEXT PRIMARY KEY REFERENCES program_sessions(program_session_id),
+                    program_id TEXT NOT NULL REFERENCES programs(program_id),
+                    session_id TEXT NOT NULL UNIQUE,
+                    state TEXT NOT NULL,
+                    observed_at TEXT NOT NULL);
+                PRAGMA user_version=27;
+            """)
+            db.execute("INSERT INTO programs VALUES(?)", (
+                "pg_aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa",
+            ))
+            db.execute("INSERT INTO program_sessions VALUES(?,?)", (
+                "pgs_bbbbbbbb-bbbb-4bbb-8bbb-bbbbbbbbbbbb",
+                "pg_aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa",
+            ))
+            db.execute("INSERT INTO sessions(session_id) VALUES(?)", (
+                "se_cccccccc-cccc-4ccc-8ccc-cccccccccccc",
+            ))
+            db.commit()
+
+    def tearDown(self):
+        self.temporary.cleanup()
+
+    def document(self, state: str) -> dict:
+        return {
+            "format": "trainlog-program-executions",
+            "version": 1,
+            "generated_at": "2026-09-18T20:00:00Z",
+            "executions": [{
+                "program_id": "pg_aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa",
+                "program_session_id": "pgs_bbbbbbbb-bbbb-4bbb-8bbb-bbbbbbbbbbbb",
+                "session_id": "se_cccccccc-cccc-4ccc-8ccc-cccccccccccc",
+                "state": state,
+                "observed_at": "2026-09-18T19:30:00Z",
+            }],
+        }
+
+    def apply(self, state: str):
+        self.artifact.write_text(json.dumps(self.document(state)), encoding="utf-8")
+        root = program_execution_exchange.load(self.artifact)
+        with closing(sqlite3.connect(self.database)) as db:
+            result = program_execution_exchange.apply_executions(db, root)
+            db.commit()
+            row = db.execute(
+                "SELECT state,session_id FROM program_session_executions"
+            ).fetchone()
+        return result, row
+
+    def test_progression_is_durable_and_replay_is_idempotent(self):
+        self.assertEqual(((1, 0, 0), ("in_progress", "se_cccccccc-cccc-4ccc-8ccc-cccccccccccc")),
+                         self.apply("in_progress"))
+        self.assertEqual(((0, 0, 1), ("in_progress", "se_cccccccc-cccc-4ccc-8ccc-cccccccccccc")),
+                         self.apply("in_progress"))
+        self.assertEqual(((0, 1, 0), ("completed", "se_cccccccc-cccc-4ccc-8ccc-cccccccccccc")),
+                         self.apply("completed"))
+        self.assertEqual(((0, 0, 1), ("completed", "se_cccccccc-cccc-4ccc-8ccc-cccccccccccc")),
+                         self.apply("completed"))
+
+    def test_completed_requires_imported_history(self):
+        with closing(sqlite3.connect(self.database)) as db:
+            db.execute("DELETE FROM sessions")
+            db.commit()
+        self.artifact.write_text(json.dumps(self.document("completed")), encoding="utf-8")
+        root = program_execution_exchange.load(self.artifact)
+        with closing(sqlite3.connect(self.database)) as db:
+            with self.assertRaisesRegex(ValueError, "missing history"):
+                program_execution_exchange.apply_executions(db, root)
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/test_sync_deployment_tools.py

@@ -66,9 +66,11 @@ class DeploymentToolsTest(unittest.TestCase):
             self.assertEqual(result.returncode, 0, result.stderr)
             inventory = json.loads((output / "candidate-inventory.json").read_text())
             self.assertEqual(inventory["product_version"], "0.1.2")
-            self.assertEqual(inventory["desktop_schema"], 26)
+            self.assertEqual(inventory["desktop_schema"], 27)
+            self.assertEqual(inventory["android_schema"], 25)
             self.assertIn("session-preparations-v2", inventory["protocols"])
             self.assertIn("programs-v1", inventory["protocols"])
+            self.assertIn("program-executions-v1", inventory["protocols"])
             self.assertTrue((output / "bin/trainlog").is_file())
             self.assertTrue((output / "bin/trainlog-sync-once").is_file())
             self.assertTrue((output / "bin/trainlog-syncd").is_file())

tests/test_web_sessions_browser.py

@@ -185,6 +185,7 @@ class BrowserSessionsTest(unittest.TestCase):
                 detail = driver.find_element(By.CSS_SELECTOR, "main").text
                 self.assertIn("PROGRAMME · ACTIF", detail)
                 self.assertIn("Import trainlog-program v1", detail)
+                self.assertIn("À faire", detail)
                 self.assertLess(detail.index("1. Séance A ordonnée"), detail.index("2. Séance B ordonnée"))
 
                 driver.find_element(

tools/causal_delete_exchange.py

@@ -38,7 +38,7 @@ def digest(value) -> str:
 
 def require_schema(db: sqlite3.Connection) -> None:
     version = db.execute("PRAGMA user_version").fetchone()[0]
-    if version not in (20, 21, 22, 23, 24, 25, 26):
+    if version not in (20, 21, 22, 23, 24, 25, 26, 27):
         raise CausalError(f"desktop schema v20-v25 required, found v{version}")
 
 

tools/execution_draft_exchange.py

@@ -182,7 +182,7 @@ def causal_payload(draft):
 
 def require_schema(connection):
     version = connection.execute("PRAGMA user_version").fetchone()[0]
-    if version not in (19, 20, 21, 22, 23, 24, 25, 26):
+    if version not in (19, 20, 21, 22, 23, 24, 25, 26, 27):
         raise LifecycleError(f"desktop schema v19-v25 required, found v{version}")
 
 

tools/export_ai_history.py

@@ -12,7 +12,7 @@ from pathlib import Path
 from trainlog_sqlite import configure_connection
 
 
-SUPPORTED_SCHEMA_VERSIONS = (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
+SUPPORTED_SCHEMA_VERSIONS = (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
 MEASUREMENT_FIELDS = (
     "body_weight_kg", "neck_cm", "shoulders_cm", "chest_cm", "waist_cm",
     "hips_cm", "left_arm_cm", "right_arm_cm", "left_forearm_cm",

tools/export_ai_session_drafts.py

@@ -20,7 +20,7 @@ ID_PREFIX = "aid_"
 def ensure_publication_state(connection):
     """Install the additive v18 cursor for direct syncd/tool invocations."""
     owned_transaction = not connection.in_transaction
-    supported_versions = (18, 19, 20, 21, 22, 23, 24, 25, 26)
+    supported_versions = (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
     if connection.execute("PRAGMA user_version").fetchone()[0] not in supported_versions:
         raise ValueError("schema desktop v18-v25 requis")
     columns = {row[1] for row in connection.execute(

tools/export_equipment_associations.py

@@ -28,7 +28,7 @@ def main():
     args = parser.parse_args()
     connection = connect_database(args.database)
     try:
-        supported_versions = tuple(range(8, 27))
+        supported_versions = tuple(range(8, 28))
         if connection.execute("PRAGMA user_version;").fetchone()[0] not in supported_versions:
             raise ValueError("schema desktop v8 à v16 requis")
         known_equipment = load_supplied_equipment_ids(args.catalog)

tools/export_equipment_definitions.py

@@ -24,7 +24,7 @@ def main(complete_causal_envelope=False):
     connection = connect_database(args.database)
     connection.row_factory = sqlite3.Row
     try:
-        supported_versions = tuple(range(8, 27))
+        supported_versions = tuple(range(8, 28))
         if connection.execute("PRAGMA user_version").fetchone()[0] not in supported_versions:
             raise ValueError("schema desktop v8 à v16 requis")
         if not complete_causal_envelope and connection.execute("PRAGMA user_version").fetchone()[0] >= 20 and connection.execute("SELECT 1 FROM sync_causal_state WHERE target_kind='custom_equipment' AND deleted=1 LIMIT 1").fetchone():

tools/export_exercise_aliases.py

@@ -17,7 +17,7 @@ def main():
     con = connect_database(args.database)
     try:
         if con.execute("PRAGMA user_version").fetchone()[0] not in (
-                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26):
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27):
             raise ValueError("schema desktop v12-v25 requis")
         rows = con.execute(
             "SELECT source_exercise_id,canonical_exercise_id FROM exercise_aliases "

tools/export_exercise_body_zones.py

@@ -41,7 +41,7 @@ def main(complete_causal_envelope=False):
     connection = connect_database(args.database)
     connection.row_factory = sqlite3.Row
     try:
-        supported_versions = tuple(range(11, 27))
+        supported_versions = tuple(range(11, 28))
         if connection.execute("PRAGMA user_version").fetchone()[0] not in supported_versions:
             raise ValueError("schema desktop v11-v16 requis")
         if not complete_causal_envelope and connection.execute("PRAGMA user_version").fetchone()[0] >= 20 and connection.execute("SELECT 1 FROM sync_causal_state WHERE target_kind='body_zone_relation' AND deleted=1 LIMIT 1").fetchone():

tools/export_exercise_profile_state.py

@@ -25,7 +25,7 @@ def main():
     con.row_factory = sqlite3.Row
     try:
         version = con.execute("PRAGMA user_version").fetchone()[0]
-        if version not in (17, 18, 19, 20, 21, 22, 23, 24, 25, 26):
+        if version not in (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27):
             raise SystemExit(f"EXERCISE_PROFILE_STATE_EXPORT=FAIL schema={version}")
         rows = con.execute("""
             SELECT e.exercise_id,e.recording_mode,e.tracking_mode,e.data_fields,

tools/export_pc_catalog.py

@@ -71,7 +71,7 @@ def main():
         # CONTRACT: v8 adds only desktop-local custom equipment.  The PC
         # catalogue artifact is unchanged, but it must read the current
         # canonical desktop schema rather than accept a stale pre-v8 database.
-        if version not in range(8, 27):
+        if version not in range(8, 28):
             raise SystemExit(
                 "PC_CATALOG_EXPORT=FAIL "
                 f"schema={version}"

tools/export_pc_mobile.py

@@ -83,9 +83,9 @@ def main(complete_causal_envelope=False):
     con.row_factory = sqlite3.Row
     try:
         schema_version = con.execute("PRAGMA user_version").fetchone()[0]
-        if args.version == 4 and schema_version not in (19, 20, 21, 22, 23, 24, 25, 26):
+        if args.version == 4 and schema_version not in (19, 20, 21, 22, 23, 24, 25, 26, 27):
             raise ValueError("mobile V4 exige le schéma desktop v19 ou v20")
-        supported_versions = range(11, 27)
+        supported_versions = range(11, 28)
         legacy_v2_schema = args.version == 2 and schema_version == 10
         if schema_version not in supported_versions and not legacy_v2_schema:
             raise ValueError("schema desktop v11-v16 requis (v10 accepté pour export V2 explicite)")

tools/export_programs.py

@@ -16,8 +16,8 @@ def nullable(row, index):
 
 def export_programs(database: Path) -> dict:
     with closing(connect_database(database)) as db:
-        if db.execute("PRAGMA user_version").fetchone()[0] != 26:
-            raise ValueError("desktop schema v26 required")
+        if db.execute("PRAGMA user_version").fetchone()[0] not in (26, 27):
+            raise ValueError("desktop schema v26 or v27 required")
         programs = []
         for row in db.execute(
             "SELECT program_id,revision_id,title,note,state,start_date,end_date,created_at,"

tools/export_session_preparations.py

@@ -17,9 +17,9 @@ MAX_WITHDRAWALS = 128
 
 
 def build_export(connection: sqlite3.Connection) -> dict:
-    supported_versions = (24, 25, 26)
+    supported_versions = (24, 25, 26, 27)
     if connection.execute("PRAGMA user_version").fetchone()[0] not in supported_versions:
-        raise ValueError("desktop schema v24, v25 or v26 required")
+        raise ValueError("desktop schema v24, v25, v26 or v27 required")
     deliveries = []
     rows = connection.execute(
         "SELECT d.delivery_id,d.preparation_id,d.revision_id,d.execution_session_id,d.state,"

tools/export_training_feedback.py

@@ -10,7 +10,7 @@ def main(complete_causal_envelope=False):
     parser=argparse.ArgumentParser(); parser.add_argument("output",type=Path); parser.add_argument("--database",type=Path,required=True); args=parser.parse_args()
     db=connect_database(args.database)
     try:
-        supported_versions = range(15, 27)
+        supported_versions = range(15, 28)
         if db.execute("PRAGMA user_version").fetchone()[0] not in supported_versions:
             raise ValueError("schema desktop v15-v25 requis")
         if not complete_causal_envelope and db.execute("PRAGMA user_version").fetchone()[0] >= 20 and db.execute("SELECT 1 FROM sync_causal_state WHERE target_kind='feedback' AND deleted=1 LIMIT 1").fetchone(): raise ValueError("causal feedback protection requires the staged artifact")

tools/import_ai_session_draft.py

@@ -193,7 +193,7 @@ def import_payload(connection, payload, imported_at=None):
     INVARIANT: validation and every child insert share one IMMEDIATE transaction;
     any failure leaves no draft, child, or import-identity row behind.
     """
-    supported_versions = range(18, 27)
+    supported_versions = range(18, 28)
     if connection.execute("PRAGMA user_version").fetchone()[0] not in supported_versions:
         raise ImportFailure("schema desktop v18-v25 requis")
     draft, entries = validate(payload, connection)

tools/import_equipment_associations.py

@@ -187,7 +187,7 @@ def main():
     payload = json.loads(args.artifact.read_text(encoding="utf-8"))
     connection = connect_database(args.database)
     try:
-        supported_versions = range(8, 27)
+        supported_versions = range(8, 28)
         if connection.execute("PRAGMA user_version;").fetchone()[0] not in supported_versions:
             fail("schema desktop v8 à v21 requis")
         proof_path = args.mobile_export

tools/import_equipment_definitions.py

@@ -53,7 +53,7 @@ def validate(payload, reserved):
 
 def apply_definitions(connection, definitions, complete_causal_envelope=False):
     """Apply validated definitions without owning the surrounding transaction."""
-    supported_versions = range(8, 27)
+    supported_versions = range(8, 28)
     if connection.execute("PRAGMA user_version").fetchone()[0] not in supported_versions:
         fail("schema desktop v8 à v21 requis")
     if not complete_causal_envelope and connection.execute("PRAGMA user_version").fetchone()[0] >= 20 and connection.execute("SELECT 1 FROM sync_causal_state WHERE target_kind='custom_equipment' AND deleted=1 LIMIT 1").fetchone():

tools/import_exercise_aliases.py

@@ -56,7 +56,7 @@ def load(path):
 
 def apply_aliases(con, aliases):
     """Apply parsed aliases inside the caller-owned transaction."""
-    supported_versions = range(12, 27)
+    supported_versions = range(12, 28)
     if con.execute("PRAGMA user_version").fetchone()[0] not in supported_versions:
         fail("schema desktop v12-v21 requis")
     for source, canonical in aliases:

tools/import_exercise_body_zones.py

@@ -151,7 +151,7 @@ def replace(connection, row_id, primary, secondary):
 
 def apply_body_zones(connection, parsed, mobile_proof, complete_causal_envelope=False):
     """Apply validated zone rows without owning transaction boundaries."""
-    supported_versions = range(11, 27)
+    supported_versions = range(11, 28)
     if connection.execute("PRAGMA user_version").fetchone()[0] not in supported_versions:
         raise ImportFailure("schema desktop v11-v25 requis")
     if not complete_causal_envelope and connection.execute("PRAGMA user_version").fetchone()[0]>=20 and connection.execute("SELECT 1 FROM sync_causal_state WHERE target_kind='body_zone_relation' AND deleted=1 LIMIT 1").fetchone(): raise ImportFailure("causal BODY ZONES protection requires the staged artifact")

tools/import_exercise_profile_state.py

@@ -50,7 +50,7 @@ def apply_profile_state(con, root, allow_pending=False):
         if not isinstance(root,dict) or set(root)!={"format","version","generated_at","exercises"} or root["format"]!="trainlog-exercise-profile-state" or type(root["version"]) is not int or root["version"]!=1 or not isinstance(root["exercises"],list): fail("enveloppe profile-state invalide")
         parse_timestamp(root["generated_at"], "generated_at");con.row_factory=sqlite3.Row
         if con.execute("PRAGMA user_version").fetchone()[0] not in (
-                17, 18, 19, 20, 21, 22, 23, 24, 25, 26):
+                17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27):
             fail("schema desktop v17-v25 requis")
         applied=equal=ancestor=pending=0;seen=set()
         for item in root["exercises"]:

tools/import_mobile_export.py

@@ -846,7 +846,7 @@ def require_supported_schema(connection):
 
     # CONTRACT: v9 owns explicit max_results; earlier supported schemas remain
     # readable for legacy artifacts and are never made to fake that table.
-    if version not in range(5, 27):
+    if version not in range(5, 28):
         raise ImportFailure(
             f"base desktop schema v5 à v25 attendue, version trouvée: {version}"
         )
@@ -1978,7 +1978,7 @@ def apply_payload(connection, payload, trace_exercises=False):
     require_supported_schema(connection)
 
     schema_version = connection.execute("PRAGMA user_version;").fetchone()[0]
-    if payload["version"] == 4 and schema_version not in (19, 20, 21, 22, 23, 24, 25, 26):
+    if payload["version"] == 4 and schema_version not in (19, 20, 21, 22, 23, 24, 25, 26, 27):
         raise ImportFailure("mobile V4 exige le schéma desktop v19 à v25")
     if schema_version >= 20:
         protected = {(row[0], row[1]) for row in connection.execute(

tools/import_training_feedback.py

@@ -52,7 +52,7 @@ def merge_revisions(db,table,parent_column,parent_id,revisions):
 def apply_feedback(db,root,complete_causal_envelope=False):
     roots_added=roots_skipped=revisions_added=revisions_skipped=0
     db.execute("PRAGMA foreign_keys=ON")
-    supported_versions = range(15, 27)
+    supported_versions = range(15, 28)
     if db.execute("PRAGMA user_version").fetchone()[0] not in supported_versions:
         fail("schema desktop v15-v25 requis")
     if not complete_causal_envelope and db.execute("PRAGMA user_version").fetchone()[0]>=20 and db.execute("SELECT 1 FROM sync_causal_state WHERE target_kind='feedback' AND deleted=1 LIMIT 1").fetchone():fail("causal feedback protection requires the staged artifact")

tools/package_sync_candidate.py

@@ -39,6 +39,7 @@ RUNTIME_TOOLS = [
     "export_ai_session_drafts.py",
     "export_session_preparations.py",
     "export_programs.py",
+    "program_execution_exchange.py",
 ]
 
 
@@ -97,8 +98,8 @@ def main() -> int:
             ["git", "rev-parse", "HEAD"], cwd=ROOT, text=True
         ).strip(),
         "product_version": "0.1.2",
-        "desktop_schema": 26,
-        "android_schema": 24,
+        "desktop_schema": 27,
+        "android_schema": 25,
         "protocols": [
             "mobile-export-v3",
             "mobile-history-v4",
@@ -110,6 +111,7 @@ def main() -> int:
             "session-preparations-v2",
             "ai-session-drafts-v2",
             "programs-v1",
+            "program-executions-v1",
         ],
         "entry_points": [
             "bin/trainlog",

tools/program_execution_exchange.py

@@ -0,0 +1,163 @@
+#!/usr/bin/env python3
+"""Validate and merge Android program-execution provenance companion V1."""
+
+import argparse
+import json
+import re
+import sqlite3
+from datetime import datetime
+from pathlib import Path
+
+from trainlog_sqlite import connect_database
+
+
+FORMAT = "trainlog-program-executions"
+VERSION = 1
+MAX_BYTES = 4 * 1024 * 1024
+MAX_EXECUTIONS = 4096
+UUID4 = r"[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}"
+PROGRAM_ID = re.compile(rf"^pg_{UUID4}$")
+PROGRAM_SESSION_ID = re.compile(rf"^pgs_{UUID4}$")
+SESSION_ID = re.compile(rf"^se_{UUID4}$")
+
+
+def fail(message: str) -> None:
+    raise ValueError(message)
+
+
+def unique_object(pairs):
+    result = {}
+    for key, value in pairs:
+        if key in result:
+            fail(f"duplicate JSON field: {key}")
+        result[key] = value
+    return result
+
+
+def timestamp(value: object) -> str:
+    if (
+        not isinstance(value, str)
+        or "T" not in value
+        or re.search(r"(?:Z|[+-][0-9]{2}:[0-9]{2})$", value) is None
+    ):
+        fail("invalid execution timestamp")
+    try:
+        datetime.fromisoformat(value.replace("Z", "+00:00"))
+    except ValueError:
+        fail("invalid execution timestamp")
+    return value
+
+
+def load(path: Path) -> dict:
+    if path.stat().st_size > MAX_BYTES:
+        fail("program execution artifact exceeds 4 MiB")
+    root = json.loads(path.read_text(encoding="utf-8"), object_pairs_hook=unique_object)
+    if not isinstance(root, dict) or set(root) != {
+        "format", "version", "generated_at", "executions"
+    }:
+        fail("invalid program execution envelope")
+    if root["format"] != FORMAT or type(root["version"]) is not int or root["version"] != VERSION:
+        fail("unsupported program execution format")
+    timestamp(root["generated_at"])
+    values = root["executions"]
+    if not isinstance(values, list) or len(values) > MAX_EXECUTIONS:
+        fail("program executions are absent or out of bounds")
+
+    seen_program_sessions = set()
+    seen_sessions = set()
+    for item in values:
+        if not isinstance(item, dict) or set(item) != {
+            "program_id", "program_session_id", "session_id", "state", "observed_at"
+        }:
+            fail("invalid program execution")
+        if not PROGRAM_ID.fullmatch(item["program_id"]):
+            fail("invalid program_id")
+        if not PROGRAM_SESSION_ID.fullmatch(item["program_session_id"]):
+            fail("invalid program_session_id")
+        if not SESSION_ID.fullmatch(item["session_id"]):
+            fail("invalid session_id")
+        if item["state"] not in ("in_progress", "completed"):
+            fail("invalid program execution state")
+        timestamp(item["observed_at"])
+        if item["program_session_id"] in seen_program_sessions or item["session_id"] in seen_sessions:
+            fail("duplicate program execution identity")
+        seen_program_sessions.add(item["program_session_id"])
+        seen_sessions.add(item["session_id"])
+    return root
+
+
+def apply_executions(db: sqlite3.Connection, root: dict) -> tuple[int, int, int]:
+    if db.execute("PRAGMA user_version").fetchone()[0] != 27:
+        fail("desktop schema v27 required")
+    added = 0
+    advanced = 0
+    skipped = 0
+    for item in root["executions"]:
+        program_session = db.execute(
+            "SELECT program_id FROM program_sessions WHERE program_session_id=?",
+            (item["program_session_id"],),
+        ).fetchone()
+        if program_session is None or program_session[0] != item["program_id"]:
+            fail("program execution references an unknown or mismatched session")
+        if item["state"] == "completed":
+            completed = db.execute(
+                "SELECT 1 FROM sessions WHERE session_id=?", (item["session_id"],)
+            ).fetchone()
+            if completed is None:
+                fail("completed program execution references missing history")
+
+        existing = db.execute(
+            "SELECT program_id,session_id,state,observed_at "
+            "FROM program_session_executions WHERE program_session_id=?",
+            (item["program_session_id"],),
+        ).fetchone()
+        expected = (
+            item["program_id"], item["session_id"], item["state"], item["observed_at"]
+        )
+        if existing is None:
+            db.execute(
+                "INSERT INTO program_session_executions("
+                "program_session_id,program_id,session_id,state,observed_at) "
+                "VALUES(?,?,?,?,?)",
+                (item["program_session_id"], *expected),
+            )
+            added += 1
+        elif tuple(existing) == expected:
+            skipped += 1
+        elif existing[0] == item["program_id"] and existing[1] == item["session_id"] and \
+                existing[2] == "in_progress" and item["state"] == "completed":
+            db.execute(
+                "UPDATE program_session_executions SET state='completed',observed_at=? "
+                "WHERE program_session_id=?",
+                (item["observed_at"], item["program_session_id"]),
+            )
+            advanced += 1
+        else:
+            fail("HARD CONFLICT for program execution provenance")
+    return added, advanced, skipped
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser()
+    parser.add_argument("artifact", type=Path)
+    parser.add_argument("--database", required=True, type=Path)
+    args = parser.parse_args()
+    root = load(args.artifact)
+    db = connect_database(args.database)
+    try:
+        db.execute("BEGIN IMMEDIATE")
+        result = apply_executions(db, root)
+        db.commit()
+    except Exception:
+        db.rollback()
+        raise
+    finally:
+        db.close()
+    print(
+        "PROGRAM_EXECUTIONS_IMPORT=PASS "
+        f"added={result[0]} advanced={result[1]} skipped={result[2]}"
+    )
+
+
+if __name__ == "__main__":
+    main()

tools/sync_generation_exchange.py

@@ -28,6 +28,7 @@ import import_exercise_body_zones
 import import_exercise_profile_state
 import import_mobile_export
 import import_training_feedback
+import program_execution_exchange
 import export_equipment_definitions
 import export_exercise_body_zones
 import export_pc_mobile
@@ -75,7 +76,9 @@ ARTIFACTS = (
     ("programs-v1", "trainlog-programs", 1, "programs-v1.json", False,
      "export_programs.py", ()),
 )
-SUPPORTED = {(row[1], row[2]) for row in ARTIFACTS}
+SUPPORTED = {(row[1], row[2]) for row in ARTIFACTS} | {
+    ("trainlog-program-executions", 1),
+}
 
 
 class GenerationError(RuntimeError):
@@ -203,9 +206,9 @@ def validate_manifest_bytes(raw: bytes, expected_consumer: str | None = None):
 
 
 def require_schema(db: sqlite3.Connection) -> None:
-    supported_versions = (24, 25, 26)
+    supported_versions = (24, 25, 26, 27)
     if db.execute("PRAGMA user_version").fetchone()[0] not in supported_versions:
-        raise GenerationError("desktop schema v24, v25 or v26 required")
+        raise GenerationError("desktop schema v24, v25, v26 or v27 required")
 
 
 def peer_identity(db: sqlite3.Connection, kind: str) -> str:
@@ -602,6 +605,10 @@ def consume_desktop(database: Path, directory: Path) -> dict:
     zones_payload = strict_json(required("body-zones").read_bytes(), MAX_ARTIFACT)
     parsed_zones = import_exercise_body_zones.parse_payload(zones_payload)
     feedback = import_training_feedback.load(required("feedback"))
+    program_executions = (
+        program_execution_exchange.load(listed["program-executions"])
+        if "program-executions" in listed else None
+    )
     mobile_occurrences = import_equipment_associations.load_mobile_occurrences(required("history"))
 
     with closing(connect_database(database)) as db:
@@ -633,6 +640,8 @@ def consume_desktop(database: Path, directory: Path) -> dict:
             import_exercise_body_zones.apply_body_zones(db, parsed_zones, {}, complete_causal_envelope=True)
             import_training_feedback.apply_feedback(db, feedback, complete_causal_envelope=True)
             execution_draft_exchange.import_document(db, drafts, own_transaction=False)
+            if program_executions is not None:
+                program_execution_exchange.apply_executions(db, program_executions)
             ack = record_consumed(db, manifest, manifest_digest)
             db.commit()
             return ack

tui/include/trainlog/database.h

@@ -17,7 +17,7 @@
 #include "trainlog/model.h"
 #include "trainlog/status.h"
 
-#define TRAINLOG_DATABASE_SCHEMA_VERSION 26
+#define TRAINLOG_DATABASE_SCHEMA_VERSION 27
 
 typedef struct TrainlogDatabase TrainlogDatabase;
 

tui/src/database.c

@@ -1230,6 +1230,25 @@ static const char *const MIGRATE_V25_TO_V26_SQL =
     "generation_id,deleted_at,request_id) WHERE acknowledged_at IS NULL;"
     "PRAGMA user_version=26;COMMIT;";
 
+/* WHY: Android can execute a desktop-owned program session offline, so the
+ * canonical desktop needs a durable stable-identity link after import.
+ * CONTRACT: rows describe execution provenance only and never own or mutate
+ * program definitions or completed-session history. INVARIANT: one program
+ * session has at most one execution and replaying the same fact is idempotent. */
+static const char *const MIGRATE_V26_TO_V27_SQL =
+    "BEGIN IMMEDIATE;"
+    "CREATE TABLE IF NOT EXISTS program_session_executions("
+    "program_session_id TEXT PRIMARY KEY REFERENCES program_sessions(program_session_id) "
+    "ON DELETE RESTRICT,"
+    "program_id TEXT NOT NULL REFERENCES programs(program_id) ON DELETE RESTRICT,"
+    "session_id TEXT NOT NULL UNIQUE,"
+    "state TEXT NOT NULL CHECK(state IN('in_progress','completed')) ,"
+    "observed_at TEXT NOT NULL,"
+    "CHECK(length(program_id)>0 AND length(session_id)>0));"
+    "CREATE INDEX IF NOT EXISTS program_session_executions_program "
+    "ON program_session_executions(program_id,state);"
+    "PRAGMA user_version=27;COMMIT;";
+
 /* CONTRACT: migration fixtures may retain additive v25 columns while
  * deliberately lowering user_version. Add each provenance column only when
  * absent; a genuine v24 database still receives both before opening returns. */
@@ -2019,7 +2038,7 @@ static TrainlogStatus initialize_or_validate_schema(TrainlogDatabase *database,
     } else if (version == 11 || version == 12 || version == 13 || version == 14 || version == 15 ||
                version == 16 || version == 17 || version == 18 || version == 19 || version == 20 ||
                version == 21 || version == 22 || version == 23 || version == 24 || version == 25 ||
-               version == 26) {
+               version == 26 || version == 27) {
         status = TRAINLOG_STATUS_OK;
     } else {
         if (version == 1) {
@@ -2155,6 +2174,9 @@ static TrainlogStatus initialize_or_validate_schema(TrainlogDatabase *database,
     if (status == TRAINLOG_STATUS_OK && version < 26) {
         status = execute_sql(database, MIGRATE_V25_TO_V26_SQL);
     }
+    if (status == TRAINLOG_STATUS_OK && version < 27) {
+        status = execute_sql(database, MIGRATE_V26_TO_V27_SQL);
+    }
     if (status == TRAINLOG_STATUS_OK) {
         status = ensure_v18_ai_draft_publication_state(database);
     }
@@ -2174,7 +2196,7 @@ static TrainlogStatus initialize_or_validate_schema(TrainlogDatabase *database,
     if (status != TRAINLOG_STATUS_OK) {
         set_open_diagnostic(output_diagnostic,
                             output_diagnostic_capacity,
-                            version == 0 ? "create schema v26" : "migrate database to schema v26",
+                            version == 0 ? "create schema v27" : "migrate database to schema v27",
                             database->connection,
                             SQLITE_ERROR);
         (void)sqlite3_exec(database->connection, "ROLLBACK;", NULL, NULL, NULL);

tui/src/web_programs.c

@@ -366,6 +366,8 @@ static TrainlogStatus add_program_session_json(TrainlogDatabase *database,
         !add_column_text(document, session, "session_type", statement, 3) ||
         !add_column_text(document, session, "planned_for", statement, 4) ||
         !add_column_text(document, session, "note", statement, 5) ||
+        !add_column_text(document, session, "execution_state", statement, 6) ||
+        !add_column_text(document, session, "execution_session_id", statement, 7) ||
         !yyjson_mut_obj_add_val(document, session, "occurrences", entries) ||
         !yyjson_mut_arr_add_val(sessions, session)) {
         return TRAINLOG_STATUS_DATABASE_ERROR;
@@ -379,8 +381,15 @@ static TrainlogStatus add_program_sessions(TrainlogDatabase *database,
                                            yyjson_mut_doc *document,
                                            yyjson_mut_val *sessions) {
     static const char SESSION_SQL[] =
-        "SELECT program_session_id,position,title,session_type,planned_for,note FROM "
-        "program_sessions WHERE program_id=?1 ORDER BY position,program_session_id";
+        "SELECT ps.program_session_id,ps.position,ps.title,ps.session_type,ps.planned_for,"
+        "ps.note,CASE WHEN pe.state='completed' THEN 'completed' "
+        "WHEN pe.state='in_progress' THEN 'in_progress' "
+        "WHEN EXISTS(SELECT 1 FROM session_preparations sp WHERE "
+        "sp.source_program_session_id=ps.program_session_id AND sp.withdrawn_at IS NULL) "
+        "THEN 'prepared' ELSE 'todo' END,pe.session_id "
+        "FROM program_sessions ps LEFT JOIN program_session_executions pe "
+        "ON pe.program_session_id=ps.program_session_id "
+        "WHERE ps.program_id=?1 ORDER BY ps.position,ps.program_session_id";
     sqlite3_stmt *session_statement = NULL;
     int step;
 

tui/tests/sync_generation_fixture.c

@@ -74,6 +74,21 @@ delete_program(TrainlogDatabase *database, const char *expected_revision, const
     return 0;
 }
 
+static int print_program_detail(TrainlogDatabase *database) {
+    char *response = NULL;
+    size_t response_size = 0U;
+    TrainlogStatus status = trainlog_web_programs_detail_json(
+        database, "pg_aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa", &response, &response_size);
+
+    if (status != TRAINLOG_STATUS_OK) {
+        free(response);
+        return 6;
+    }
+    (void)printf("PROGRAM_DETAIL=%s\n", response);
+    free(response);
+    return 0;
+}
+
 static int create_session_fixture(TrainlogDatabase *database) {
     TrainlogSetInput set = {.reps = 9, .has_weight = true, .weight_kg = 32.5};
     TrainlogSessionExerciseInput exercise;
@@ -212,6 +227,8 @@ int main(int argc, char **argv) {
         result = create_session_fixture(database);
     } else if (argc == 3 && strcmp(argv[2], "program-create") == 0) {
         result = create_program(database);
+    } else if (argc == 3 && strcmp(argv[2], "program-detail") == 0) {
+        result = print_program_detail(database);
     } else if (argc == 5 && strcmp(argv[2], "program-delete") == 0) {
         result = delete_program(database, argv[3], argv[4]);
     } else {

tui/tests/test_schema_v26_migration.c

@@ -286,6 +286,8 @@ static bool build_v25_fixture(const char *path) {
                  "PRAGMA foreign_keys=OFF;"
                  "DROP INDEX program_deletions_pending;"
                  "DROP TABLE program_deletions;"
+                 "DROP INDEX program_session_executions_program;"
+                 "DROP TABLE program_session_executions;"
                  "ALTER TABLE programs DROP COLUMN deleted_at;"
                  "PRAGMA user_version=25;"
                  "PRAGMA foreign_keys=ON;") ||
@@ -388,7 +390,8 @@ static int run_test(void) {
     static const ProjectionSpec UNCHANGED_SCHEMA[] = {
         {"schema",
          "SELECT type,name,tbl_name,sql FROM sqlite_master WHERE name NOT LIKE 'sqlite_%' "
-         "AND name NOT IN('programs','program_deletions','program_deletions_pending') "
+         "AND name NOT IN('programs','program_deletions','program_deletions_pending',"
+         "'program_session_executions','program_session_executions_program') "
          "ORDER BY type,name"},
     };
     char path[] = "/tmp/trainlog-v26-populated-XXXXXX";
@@ -429,12 +432,12 @@ static int run_test(void) {
     CHECK(trainlog_database_open_with_diagnostic(path, &database, diagnostic, sizeof(diagnostic)) ==
           TRAINLOG_STATUS_OK);
     CHECK(trainlog_database_schema_version(database, &version) == TRAINLOG_STATUS_OK);
-    CHECK(version == 26);
+    CHECK(version == 27);
     trainlog_database_close(database);
     database = NULL;
 
     CHECK(sqlite3_open_v2(path, &raw, SQLITE_OPEN_READONLY, NULL) == SQLITE_OK);
-    CHECK(scalar(raw, "PRAGMA user_version") == 26);
+    CHECK(scalar(raw, "PRAGMA user_version") == 27);
     CHECK(capture_projection(raw,
                              BUSINESS_PROJECTIONS,
                              sizeof(BUSINESS_PROJECTIONS) / sizeof(BUSINESS_PROJECTIONS[0]),
@@ -449,6 +452,7 @@ static int run_test(void) {
     CHECK(scalar(raw, "SELECT COUNT(*) FROM pragma_foreign_key_check") == 0);
     CHECK(scalar(raw, "SELECT COUNT(*) FROM programs WHERE deleted_at IS NOT NULL") == 0);
     CHECK(scalar(raw, "SELECT COUNT(*) FROM program_deletions") == 0);
+    CHECK(scalar(raw, "SELECT COUNT(*) FROM program_session_executions") == 0);
     CHECK(scalar(raw,
                  "SELECT COUNT(*) FROM pragma_table_info('programs') WHERE name='deleted_at' AND "
                  "type='TEXT' AND \"notnull\"=0") == 1);
@@ -458,7 +462,7 @@ static int run_test(void) {
                  "name='program_deletions_pending')") == 2);
     CHECK(scalar(raw, "SELECT COUNT(*) FROM pragma_table_info('programs')") == 13);
     CHECK(scalar(raw, "SELECT COUNT(*) FROM sqlite_master WHERE name NOT LIKE 'sqlite_%'") ==
-          schema_object_count_before + 2);
+          schema_object_count_before + 4);
     ok = true;
 cleanup:
     if (!ok && diagnostic[0] != '\0') {

tui/tests/test_schema_v7_migration.c

@@ -178,8 +178,8 @@ static bool test_v7_migration_sqlite_failure_has_diagnostic(void) {
           TRAINLOG_STATUS_DATABASE_ERROR);
     CHECK(database == NULL);
     CHECK(strncmp(diagnostic,
-                  "migrate database to schema v26: SQLite rc=",
-                  strlen("migrate database to schema v26: SQLite rc=")) == 0);
+                  "migrate database to schema v27: SQLite rc=",
+                  strlen("migrate database to schema v27: SQLite rc=")) == 0);
     CHECK(strstr(diagnostic, "extended_rc=") != NULL);
     CHECK(strstr(diagnostic, "custom_equipment") != NULL);
     CHECK(strstr(diagnostic, "already exists") != NULL);
@@ -197,12 +197,12 @@ static bool test_newer_schema_has_application_diagnostic(void) {
     CHECK(fd >= 0);
     CHECK(close(fd) == 0);
     CHECK(sqlite3_open(path, &raw) == SQLITE_OK);
-    CHECK(sqlite3_exec(raw, "PRAGMA user_version=27;", NULL, NULL, NULL) == SQLITE_OK);
+    CHECK(sqlite3_exec(raw, "PRAGMA user_version=28;", NULL, NULL, NULL) == SQLITE_OK);
     CHECK(sqlite3_close(raw) == SQLITE_OK);
     CHECK(trainlog_database_open_with_diagnostic(path, &database, diagnostic, sizeof(diagnostic)) ==
           TRAINLOG_STATUS_SCHEMA_UNSUPPORTED);
     CHECK(database == NULL);
-    CHECK(strstr(diagnostic, "schema version 27 is newer") != NULL);
+    CHECK(strstr(diagnostic, "schema version 28 is newer") != NULL);
     CHECK(strstr(diagnostic, "SQLite") == NULL);
     CHECK(unlink(path) == 0);
     return true;

tui/tests/test_schema_v9_migration.c

@@ -154,7 +154,7 @@ static bool test_v9_to_v10_failure_rolls_back(void) {
     CHECK(trainlog_database_open_with_diagnostic(path, &database, diagnostic, sizeof(diagnostic)) ==
           TRAINLOG_STATUS_DATABASE_ERROR);
     CHECK(database == NULL);
-    CHECK(strstr(diagnostic, "migrate database to schema v26") != NULL);
+    CHECK(strstr(diagnostic, "migrate database to schema v27") != NULL);
     CHECK(strstr(diagnostic, "performed_sets_v9") != NULL);
 
     CHECK(sqlite3_open(path, &raw) == SQLITE_OK);

tui/tests/test_web_programs.c

@@ -193,7 +193,7 @@ static bool import_archive_and_prepare(void) {
     char *second_entry;
 
     CHECK(trainlog_database_open(":memory:", &database) == TRAINLOG_STATUS_OK);
-    CHECK(scalar(database, "PRAGMA user_version") == 26);
+    CHECK(scalar(database, "PRAGMA user_version") == 27);
     CHECK(scalar(database,
                  "SELECT COUNT(*) FROM pragma_table_info('program_deletions') WHERE "
                  "name IN('generation_id','acknowledged_at')") == 2);
@@ -268,6 +268,7 @@ static bool import_archive_and_prepare(void) {
           TRAINLOG_STATUS_OK);
     CHECK(extract_string(response, "revision_id", revision, sizeof(revision)));
     CHECK(strstr(response, "Exercise fixture") == NULL);
+    CHECK(strstr(response, "\"execution_state\":\"todo\"") != NULL);
     free(response);
     response = NULL;
 
@@ -283,6 +284,12 @@ static bool import_archive_and_prepare(void) {
                  "WHERE source_program_id='pg_aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa'") == 1);
     free(response);
     response = NULL;
+    CHECK(trainlog_web_programs_detail_json(
+              database, "pg_aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa", &response, &response_size) ==
+          TRAINLOG_STATUS_OK);
+    CHECK(strstr(response, "\"execution_state\":\"prepared\"") != NULL);
+    free(response);
+    response = NULL;
 
     CHECK(trainlog_web_programs_archive_json(database,
                                              "pg_aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa",

web/src/api/programs.ts

@@ -39,6 +39,8 @@ export interface ProgramSession {
   session_type: 'training' | 'max_test'
   planned_for: string | null
   note: string | null
+  execution_state: 'todo' | 'prepared' | 'in_progress' | 'completed'
+  execution_session_id: string | null
   occurrences: ProgramOccurrence[]
 }
 

web/src/routes/ProgramsTab.test.tsx

@@ -165,6 +165,8 @@ describe('Programs tab', () => {
             session_type: 'training',
             planned_for: null,
             note: null,
+            execution_state: 'todo',
+            execution_session_id: null,
             occurrences: [{
               entry_id: 'pge_test',
               position: 0,

web/src/routes/ProgramsTab.tsx

@@ -63,6 +63,12 @@ function ProgramDetailView({ programId, onBack, onChanged }: {
       setError(reason instanceof Error ? reason.message : 'Création impossible')
     }
   }
+  const executionLabel = (state: ProgramDetail['sessions'][number]['execution_state']) => ({
+    todo: 'À faire',
+    prepared: 'Préparée',
+    in_progress: 'En cours',
+    completed: 'Effectuée',
+  })[state]
   return <article className="session-detail program-detail">
     <div className="sessions-toolbar">
       <button type="button" className="quiet-action" onClick={onBack}>
@@ -97,6 +103,9 @@ function ProgramDetailView({ programId, onBack, onChanged }: {
       {program.sessions.map((session) => <li key={session.program_session_id}>
         <div>
           <strong>{session.position + 1}. {session.title}</strong>
+          <span className={`program-execution-state state-${session.execution_state}`}>
+            {executionLabel(session.execution_state)}
+          </span>
           <p>
             {session.session_type === 'max_test'
               ? 'Test MAX planifié' : 'Entraînement planifié'}
@@ -118,11 +127,14 @@ function ProgramDetailView({ programId, onBack, onChanged }: {
             </li>)}
           </ol>
         </div>
-        <button
+        {session.execution_state === 'todo' && <button
           type="button"
           className="primary-action"
           onClick={() => void prepare(session.program_session_id)}
-        >Créer une préparation</button>
+        >Créer une préparation</button>}
+        {session.execution_state === 'prepared' && <span>Préparation disponible</span>}
+        {session.execution_state === 'in_progress' && <span>Séance en cours sur Android</span>}
+        {session.execution_state === 'completed' && <span>✓ Séance effectuée</span>}
       </li>)}
     </ol>
   </article>

web/src/theme/app.css

@@ -172,6 +172,10 @@ h2 { color: var(--text); font-size: var(--font-size-lg); line-height: 1.25; lett
 .program-session-list { padding: 0; list-style: none; }
 .program-session-list li { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem; border: 1px solid var(--surface-1); border-radius: .7rem; }
 .program-session-list p { margin: .35rem 0 0; color: var(--subtext-0); }
+.program-execution-state { display: inline-flex; margin-left: .65rem; padding: .2rem .55rem; border-radius: 999px; font-size: .82rem; font-weight: 700; }
+.program-execution-state.state-todo { background: var(--surface-1); color: var(--subtext-1); }
+.program-execution-state.state-prepared, .program-execution-state.state-in_progress { background: color-mix(in srgb, var(--yellow) 18%, transparent); color: var(--yellow); }
+.program-execution-state.state-completed { background: color-mix(in srgb, var(--green) 18%, transparent); color: var(--green); }
 .import-preview { margin: 1rem 0; padding: 1rem; border: 1px solid var(--blue); border-radius: .75rem; background: var(--mantle); }
 .visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
 @media (max-width: 600px) {