docs: session 2026-04-18 memory + roadmap update

- Adds memory/project_session_2026_04_18.md with full inventory of
  the autonomous AFK session: 14 commits shipping E.1/E.2/E.3/F.1/F.2/
  E.4/E.5/H.1/G.1/G.2 + GameEventWiring glue, 470 → 603 tests.
- Appends both session pages (2026-04-17 bug-bash + 2026-04-18 roadmap
  push) to MEMORY.md.
- Updates docs/plans/2026-04-11-roadmap.md "Phases already shipped"
  table with every phase that landed today.

Current roadmap deltas vs doc-start state:
- Phase D.1 (font/overlay): shipped already, now in table.
- Phase E.1-E.5, F.1-F.2, G.1-G.2, H.1: all shipped today.
- Glue row for GameEventWiring (not a numbered phase but load-bearing).

Deferred items noted in session page:
- Particle GL renderer (E.3b), lighting shader UBO (G.2 second pass),
  PlayerDescription full body parse, dungeon streaming (G.3), char
  create (H.4), allegiance (H.2), quest/dialog VM (H.3).

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

docs/plans/2026-04-11-roadmap.md

@@ -33,6 +33,18 @@
 | A.3 | Background net receive thread — dedicated daemon thread buffers UDP into Channel, render thread drains | Visual ✓ |
 | B.3 | Physics collision engine — TerrainSurface (heightmap Z), CellSurface (indoor floor polygon projection), PhysicsEngine (resolver with step-height + cell transitions). Populated from streaming pipeline. | Tests ✓ |
 | B.2 | Player movement mode — Tab-toggled WASD ground walking, walk/run/idle animations, third-person chase camera, MoveToState + AutonomousPosition outbound, portal entry. Outdoor-only MVP. | Live ✓ |
+| D.1 | 2D ortho overlay + font rendering (StbTrueTypeSharp atlas + TextRenderer + DebugOverlay) | Visual ✓ |
+| E.1 | Motion-hook expansion — AnimationSequencer fires all 27 hook types per crossed frame; PosFrames root motion + vel/omega exposure; IAnimationHookSink + AnimationHookRouter fan-out | Tests ✓ |
+| E.2 | Audio engine — OpenAL 16-voice 3D pool with retail-faithful quieter-slot eviction, SoundTable cookbook (probability-weighted variant picking), Wave PCM decoder, AudioHookSink wiring | Tests ✓ |
+| E.3 | Particle system (data layer) — ParticleSystem with 13 motion integrators, EmitterDescRegistry, ParticleHookSink wiring all CreateParticle / DestroyParticle / StopParticle hooks | Tests ✓ |
+| E.4 | Combat notifications + outbound — AttackTargetRequest (0x0008), 7 combat notification parsers (Victim/Defender/Attacker/Evasion/AttackDone/UpdateHealth), CombatState per-entity health tracker | Tests ✓ |
+| E.5 | Spell cast wire — CastSpellRequest targeted (0x004A) + untargeted (0x0048), Spellbook (learned spells + active-enchantment layers), 5 enchantment GameEvent parsers | Tests ✓ |
+| F.1 | GameEvent (0xF7B0) envelope dispatcher — all 94 sub-opcodes routed, exception-isolated handler registry, unhandled-count diagnostic bag; 18 event-payload parsers | Tests ✓ |
+| F.2 | Item model + Appraise — ItemRepository with move/equip/property events, AppraiseRequest (0x00C8), IdentifyObjectResponse header, WieldObject + InventoryPutObjInContainer | Tests ✓ |
+| G.1 | Sky + day/night — DerethDateTime (retail-exact 7620-tick calendar + 16-hour names + PY year), SkyStateProvider (4-keyframe default with angular-wrap lerp), WorldTimeService (server-synced clock with real-time advance) | Tests ✓ |
+| G.2 | Dynamic lighting (selection) — LightSource + LightManager with retail 8-light cap, range-squared with 1.1× slack, slot 0 reserved for Sun, OwnerId-keyed unregister | Tests ✓ |
+| H.1 | Chat wire layer — Talk (0x0015) / Tell (0x005D) / ChatChannel (0x0147) outbound, HearSpeech (0x02BB local + 0x02BC ranged) inbound, ChatLog ring buffer with adapters for every chat source | Tests ✓ |
+| Glue | GameEventWiring.WireAll — single-call registration mapping parsed GameEvents → Core state classes (ChatLog, CombatState, Spellbook, ItemRepository); GameWindow exposes state classes + wires them to live session | Tests ✓ |
 
 Plus polish that doesn't get its own phase number:
 - FlyCamera default speed lowered + Shift-to-boost