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trainlog/docs/reviews/session_edit_persistence.md

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Transaction-safe session editing

Status

SESSION_EDIT_PERSISTENCE=IMPLEMENTED
SESSION_EDIT_TUI=IMPLEMENTED
TRAINLOG_FORMAT_V1=FROZEN
DATABASE_SCHEMA_V2=UNCHANGED

This slice adds the persistence foundation required to correct a recorded workout without deleting the session itself.

trainlog_database_replace_session_exercises(...) replaces the session_exercises and performed_sets children inside one explicit transaction.

The parent sessions row is never deleted. Therefore these remain stable:

  • session_id;
  • start/end timestamps;
  • session_type;
  • session notes;
  • any body_observations.session_row_id link.

On any lookup, constraint or insertion error, the whole replacement rolls back.

trainlog_database_load_session_editable(...) exposes the exact persisted exercise/set values in bounded caller-owned buffers. It refuses insufficient capacity instead of silently truncating editable data.

No schema migration and no JSON v1 change are required.

TUI integration

The persistence foundation is now used by the ncurses editor.

A persisted workout can be reopened from history or session detail, corrected, and saved without deleting/recreating the parent sessions row.

Draft editing and persisted editing share the same bounded exercise/set model. Cancelling with Escape leaves the stored workout unchanged.