research(vfx): pin retail projectile and effect oracle

Establish the executable-backed PhysicsDesc, sequence-gate, PhysicsScript, CreateBlocking, particle-anchor, projectile, and Hidden-state behavior before changing runtime code. Correct stale blocking/threshold claims and synchronize the project instructions with the current UI architecture and matching retail binary.

Add copyright-safe packet and DAT-container fixtures plus a failing installed-DAT conformance audit for projectile shapes, typed tables, recall motion, default scripts, and raw CreateBlocking inventory.

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

CLAUDE.md

@@ -493,10 +493,13 @@ guessing has failed twice in a row.**
 
 ### What we have
 
-- **Matching binary**: `C:\Turbine\Asheron's Call\acclient.exe`
-  v11.4186 (linker timestamp `2013-09-06 00:17:42 UTC`,
+- **Matching binary**: `C:\Users\erikn\Downloads\acclient.exe`
+  v11.4186 (linker timestamp `2013-09-06 00:17:56 UTC`,
   CodeView GUID `9e847e2f-777c-4bd9-886c-22256bb87f32`). Pairs
-  exactly with our `refs/acclient.pdb`.
+  exactly with our `refs/acclient.pdb`. The current
+  `C:\Turbine\Asheron's Call\acclient.exe` is a 2015 build with GUID
+  `08e25c14-e2a1-46d5-b056-92b2e43a7234` and must not be used for
+  this PDB/address map.
 - **Debugger**: `cdb.exe` (console WinDbg) at
   `C:\Program Files (x86)\Windows Kits\10\Debuggers\x86\cdb.exe`.
   Install via Microsoft Store WinDbg (~50 MB). 32-bit version is
@@ -515,7 +518,7 @@ guessing has failed twice in a row.**
 
 1. **Verify the binary matches the PDB:**
    ```bash
-   py tools/pdb-extract/check_exe_pdb.py "C:/Turbine/Asheron's Call/acclient.exe"
+   py tools/pdb-extract/check_exe_pdb.py "C:/Users/erikn/Downloads/acclient.exe"
    ```
    Expect: `=== MATCH: this exe pairs with our acclient.pdb ===`