feat(physics): port retail projectile integration

Add a pure Core projectile driver for retail clock quanta, final-state acceleration, 50-unit velocity clamping, world-space angular integration, full-3D AlignPath, and oriented Setup-local sphere sweeps. Preserve exact success versus set_frame-only failure semantics, independent Contact/OnWalkable state, and full-cell identity across all landblock directions.

Port OBJECTINFO::missile_ignore with explicit weenie/creature metadata, remove the invented transition-step cap, retain PathClipped without arming PerfectClip, and keep authoritative target identity optional. Add malformed-shape/clock, thin-wall, terrain, target-exclusion, frame-spike, failure-state, and boundary conformance coverage.

Retire TS-2 and synchronize the architecture, milestones, roadmap, research oracle, and durable physics memory.

Co-Authored-By: Codex <noreply@openai.com>

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

@@ -184,7 +184,8 @@ behavior.
   catch #103).
 - **Camera-collision (shipped 2026-05-30, kept):** retail `SmartBox::update_viewer`
   swept-sphere spring arm (`CameraDiagnostics.CollideCamera`, `PhysicsCameraCollisionProbe`,
-  `RetailChaseCamera` integration) + viewer/sight bypass of the 30-step transition cap.
+  `RetailChaseCamera` integration); Step 6 later removed the non-retail 30-step
+  transition cap for every mover after real missile catch-up sweeps proved it invalid.
   Specs: [`2026-05-29-a8f-camera-collision-design.md`](../superpowers/specs/2026-05-29-a8f-camera-collision-design.md).
 
 **Today's pre-M1.5 baseline** (2026-05-20 — committed in this
@@ -514,6 +515,8 @@ behavior. Estimated 17–26 days focused work, 3–5 weeks calendar.
 - **✓ SHIPPED — D.7 — Cursor manager (user-confirmed 2026-07-11).** All reachable `ClientUISystem::UpdateCursorState @ 0x00564630` branches resolve through production DAT EnumIDMap table 6, with event-ordered global-default versus captured/hovered `MediaDescCursor` layering from `UIElementManager::CheckCursor @ 0x0045ABF0`. OS fallback remains only AP-72 and emits a visible diagnostic. The live gate covered world/object, combat, targeted-use, text, move/resize, and drag contexts; combat-indicator mouse clicks and the quick key share the same toggle command.
 - ~~**D.8 — Sound.**~~ **Superseded — shipped as Phase E.2** (`SoundTable`/`Sound` dat decode, OpenAL 16-voice engine, per-entity 3D positional audio via `AudioHookSink`). Entry kept here for history; see the shipped table.
 
+- **Missile/portal VFX campaign Step 6 implemented and independently reviewed 2026-07-14.** Pure Core now owns the retail projectile clock/integration/sweep primitive: 0.2-second catch-up quanta, 50-unit/second clamp, final-state acceleration, world-space omega, complete 3-D AlignPath, scaled Setup-local collision spheres, terrain/BSP/object continuous sweeps, exact `OBJECTINFO::missile_ignore`, self-shadow rejection, elastic/inelastic response, and correct full-cell rebasing across loaded landblocks. App live ownership and authoritative corrections remain Step 7. TS-2 is retired; ordinary missiles add PathClipped but not PerfectClip, so AP-83/AP-91 remain dormant.
+
 **Reference docs:** `docs/research/retail-ui/00-master-synthesis.md` + slices 01-06. Every AC-specific behavior has a decompiled FUN_ / DAT_ citation.
 
 **Acceptance:** chat messages display in a retail-style panel, health/stamina/mana orbs fill correctly, attributes panel shows player stats, inventory opens with drag-drop working, and sound plays on hit/footstep.