docs(plans): #36 sky-PES dispatch port plan + .gitignore for retail-debugger scratch

Plan doc `docs/plans/2026-04-30-sky-pes-port.md` captures the full
porting plan for #36 (sky-PES dispatch chain). Three phases:
  M.1 — decomp dive (no code yet) for CallPESHook::Execute,
        CPhysicsObj::CallPES, CreateParticleHook::Execute,
        GameSky::CreateDeletePhysicsObjects, and the dynamic-spawn
        trigger (region/weather/time-of-day handler).
  M.2 — optional cdb verification with detailed args (this pointer +
        pes_id + caller stack walk).
  M.3 — implementation: persistent emitter creation at cell load,
        dynamic spawn on transitions, PES script-timeline driver,
        particle-system render wire-up.
  M.4 — live side-by-side verification.

Acceptance: aurora visible at right moments, clouds dense like retail,
storm flashes during Rainy storm windows, PES dispatch rate matches
retail's ~150/min.

.gitignore extended to suppress per-session retail-debugger scratch
files (cdb scripts, launch logs, analysis ps1 helpers). The
canonical workflow lives in CLAUDE.md "Retail debugger toolchain";
session-specific traces should not pollute the repo.

Closes #36 plan stage. Implementation work begins next session.

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

.gitignore

@@ -41,3 +41,26 @@ tmp/
 
 # Git worktrees for isolated feature work
 .worktrees/
+
+# Per-session retail-debugger scratch — cdb scripts, logs, analysis helpers.
+# The committed reference workflow lives in CLAUDE.md "Retail debugger toolchain";
+# session-specific traces should not pollute the repo.
+*.cdb
+launch_*.log
+launch_*.err
+launch_*.ps1
+launch[0-9]*.log
+analyze_*.ps1
+peek_*.ps1
+run_cdb_*.ps1
+find_cdb.ps1
+find_acclient.ps1
+kill_cdb.ps1
+append_memory.ps1
+sky_*.log
+smoke_test*
+steep_roof_trace*
+substep_trace*
+sg_built.txt
+# Stray bash-mangled path artifacts from PowerShell-via-bash escaping
+C[€-￿]*