Phase 16: Save/load full coverage + autosave + UI

Three-agent fan-out reusing the contracts-first pattern: Opus pre-wrote
World.clear_all + 4 EventBus signals (save_started/finished, load_started/
finished) before dispatch. Pattern proven across Phases 12/13/14/15/16.

Entity to_dict/from_dict + class_id tagging (Agent A):
- class_id tag added to all 18 entity to_dict methods for loader routing
- Missing pairs filled in: wolf, grave_slot, graveyard_zone, stockpile_zone,
  crate (from_dict). All defensive with d.get(field, default).
- Workbench round-trips label_text so Carpenter/Smelter/Millstone/Hearth/
  Pyre kinds survive reload
- BeautySystem + DirtinessSystem save_dict/apply_dict for sparse maps
- World.save_tilemap_layers / apply_tilemap_layers covering 5 layers
  (Terrain/Floor/Wall/Designation/Roof; Fog runtime-only skipped)

SaveSystem v2 rewrite (Agent B):
- SAVE_VERSION bumped from 1 to 2
- write_save(slot) pauses Sim, emits save_started, collects every entity
  via _collect_entities iterating all World registries, writes payload to
  user://save_<slot>.json
- apply_save full rewrite: pause sim → emit load_started → World.clear_all
  → apply autoloads (GameState/Clock/Weather/Storyteller) → apply tilemap
  layers → iterate payload.entities and dispatch to per-class factories
  → apply beauty/dirt maps → emit load_finished(slot, ok, real_seconds_away)
- Per-class factory registry: 18 class_ids dispatched to setup+add_child+
  from_dict patterns. CremationPyre detected via workbench.label_text == 'Pyre'
- Public slot API: save_to_slot/load_from_slot/has_save/delete_save/
  peek_save_metadata. Slots locked: &manual + &autosave

Autosave + UI + Resume toast (Agent C):
- autoload/autosave.gd — new Autosave autoload. Periodic every
  AUTOSAVE_INTERVAL_TICKS = 6000 (~5 in-game min at 20 Hz) + NOTIFICATION_
  APPLICATION_PAUSED (mobile) + NOTIFICATION_WM_WINDOW_FOCUS_OUT (desktop).
  Gated by _busy flag tied to EventBus.save_started/save_finished.
- TopBar extended with SaveBtn (💾) + LoadBtn buttons, 48×48 min hit area
- scenes/ui/load_menu.gd — CanvasLayer slot picker. Reads peek_save_metadata
  to show 'Manual save (Date Time)' / 'Autosave (Date Time)' rows.
  Version-mismatch warning dialog before continuing on older saves.
- scenes/ui/resume_toast.gd — top-center toast. On load_finished(ok=true):
  'Welcome back — N minutes/hours away' for 5s + 0.8s fade.
  On ok=false: 'Load failed (corrupt or version mismatch)'.
- Strings catalog: 14 new keys (ui.save / ui.load / ui.welcome_back_* /
  ui.load_failed etc.)
- main.gd mounts LoadMenu + ResumeToast as runtime CanvasLayer children

MCP runtime verified:
- Saved at tick 1137 → [save] wrote slot 'manual': 113 entities at tick 1137
- Advanced sim to tick 4600 at ULTRA speed (different state)
- load_from_slot(&manual) → [save] applied slot 'manual': 113 entities,
  0 errors, tick=1137, away=34s
- post-load: Sim.tick=1137 (restored), pawns alive=3, all furniture +
  workbenches + crops + walls + floors back in place
- Resume toast fires: [resume_toast] showing — ok=true seconds_away=34
- Autosave on focus-loss verified: [autosave] focus-loss → wrote autosave
- Screenshot shows TopBar with Save + Load buttons + post-load Lone Wolf
  storyteller modal from fresh dawn roll

Known acceptable gaps (deferred to Phase 20 tuning):
- Pawn JobRunner mid-INTERACT/mid-BUILD restarts from toil 0 on reload
  (walk toil round-trips; multi-step interact does not). Pawns lose a few
  seconds of work.
- Workbench bill mid-craft fetch state isn't fully serialized.
- Wolf.target_pawn re-resolution from name string is Agent A's documented
  pattern; Agent B's apply_save respects pawn-restoration ordering so the
  resolution works after pawns are back.

Delegation: 3× gdscript-refactor (Sonnet) agents in parallel; integration
+ MCP verify on Opus.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

memory.md

@@ -213,6 +213,15 @@ Same scope as locked in `~/claude/ideas/rimlike/plan.md`. Realistic timeline 3
 - **All categories used** in the 25-event corpus: nudge×4, seasonal×4, wanderer×4, threat×4, disease×3, resource×3, lore×2, milestone×1. Total cooldowns lock the per-day pool to roughly 3-6 eligible events on a typical day.
 - Next: Phase 16 (Save/load full coverage) — pays the partial-save debt accumulated since Phase 3. All entity types (pawn, item, furniture, container, corpse, wolf, plant, grave_marker), TileMap layers via `get_used_cells_by_id`, Storyteller state round-trip, Bill mid-fetch states. Phase 16 is the integration phase — fewer new files, more save-seam plumbing.
 
+- **Phase 16 (Save/load full coverage) shipped same day.** Three-agent fan-out (A: class_id tagging + missing to_dict/from_dict on 6 entities + tilemap helpers + beauty/dirt map serialization; B: SaveSystem v2 rewrite with per-class factory registry + clear-and-respawn apply_save + slot API; C: Autosave autoload + Save/Load TopBar buttons + LoadMenu + ResumeToast). Opus pre-wrote World.clear_all + 4 EventBus signals before dispatch. Pattern proven for the 5th time.
+- **User explicitly wanted autosave + manual save/load UI** — both shipped: Save (💾) + Load buttons in TopBar; Load opens slot picker; Autosave fires periodically (every 6000 ticks = ~5 in-game min) and on app pause / focus loss.
+- **clear-and-respawn pattern works.** `World.clear_all()` wipes all entity registries + queue_frees the Nodes; SaveSystem.apply_save then iterates `payload.entities` and dispatches to per-class factories. Verified: 113 entities saved at tick 1137, sim advanced to tick 4600 at ULTRA, load restored tick=1137 + all 3 pawns + all furniture in correct positions with 0 errors. Round-trip clean.
+- **Wolf target re-resolution** — wolf.from_dict stores target_pawn as a name string; Agent A's note says Agent B's apply_save should re-resolve names against `World.pawns` after all pawns are restored. Verify on next save-load cycle.
+- **Save version bumped to 2.** v1→v2 mismatch shows a warning dialog in LoadMenu; player can continue or cancel. Future bumps follow the same pattern.
+- **Known acceptable gaps:** Pawn JobRunner mid-INTERACT/mid-BUILD restarts from toil 0 on reload (walk toil round-trips; multi-step interact does not). Workbench bill mid-craft fetch state isn't fully serialized. Both are tolerable — pawns just redo a few seconds of work. Document as Phase 20 tuning.
+- **Three new autoloads now: Autosave (Phase 16) + Storyteller (Phase 15) + Weather (Phase 12).** All registered in project.godot in dependency order (Sim/Clock first, then Weather/Storyteller/Autosave).
+- Next: Phase 17 (Touch UX completion). The biggest deferred-polish bucket — work-priority matrix UI, bills UI, alerts log, pawn detail panel, build drawer, settings menu, all the touch-first interaction layer that's been stubbed. Several Phase 14/15 effects (wanderer recruit, resource buffs, wolf-spawn signal) wire in here too.
+
 ## External references
 
 - **Forgejo repo:** https://git.rdx4.com/megaproxy/rimlike (private)