feat(m1): TUI load-on-mount state persistence from SaveExchange

[SolshineCode]

Summary

Closes the last M1 deliverable: "Close/reopen preserves all state."

Previously MainApp.on_mount called refresh_panels() but never loaded from the save exchange — every reopen started from scratch. Save-on-exit was already wired in action_quit.

Implementation (tui/app.py)

• MainApp._load_from_save_exchange() — if bridge_loop.save_exchange exists and has a file, reads the payload and replaces:
  • self.session_state (TUI state)
  • self.bridge_loop.state (loop's state reference)
  • self.bridge_loop.hook_listener.state (so post-mount injections land on the loaded session)
• Called at the top of on_mount() before refresh_panels()

Tests (+9 tests)

Pilot tests (test_app_pilot.py):

Test	What it covers
test_app_loads_kingdom_name_from_save_on_mount	Kingdom name survives close/reopen
test_app_restores_session_count_and_attributes_from_save	Sessions, turn, momentum, goals, tokens all restored
test_app_with_no_save_file_starts_fresh	No crash when save file absent
test_save_on_quit_then_reload_round_trip	Full cycle: save via s → new app → loads state
test_hook_listener_uses_loaded_state_after_mount	Post-load g key increments loaded session, not stale state

Unit tests (test_app.py — TestLoadFromSaveExchange):

• Returns False when no bridge loop / no exchange / no file
• Returns True and updates state, bridge_loop.state, and hook_listener.state when save exists

Toward kanban

Toward kanban: t_cefabee5 (M1 Vertical Slice) — all M1 deliverables now complete including close/reopen

Test plan

• pytest tui/tests/ -q → 48 passed
• pytest -q → 149 passed

https://claude.ai/code/session_01NpeAv65eF3PeVd91JoTNJs

---

Generated by Claude Code

[gemini-code-assist]

Warning

You have reached your daily quota limit. Please wait up to 24 hours and I will start processing your requests again!