docs: reconcile project status and navigation

Add a canonical documentation map, modernize the public README, and align milestone, roadmap, architecture, issue, divergence, and session guidance with the July 20 baseline. Correct the far-teleport residual to issue #153, close visually accepted indicator and terrain-tiling work, record the remaining detail-overlay and build-warning debt, and deprecate the duplicate legacy bug ledger.

Co-authored-by: OpenAI Codex <codex@openai.com>

docs/bugs.md

@@ -1,11 +1,18 @@
-# acdream — known bugs
+# acdream — historical bug snapshot (deprecated)
 
-Track visual, gameplay, and protocol bugs here. Close by moving to
-the "Fixed" section with the commit hash that resolved it.
+> **Not an active issue tracker.** This file preserves the 2026-04-14 snapshot
+> for archaeology. Several “open” entries below were superseded, narrowed, or
+> fixed by later collision/rendering work. Do not update status here and do not
+> use these BUG numbers for new work. The canonical tactical ledger is
+> [`ISSUES.md`](ISSUES.md); current program navigation is in
+> [`README.md`](README.md).
+
+The text below is intentionally retained as historical evidence of what was
+believed at the time.
 
 ---
 
-## Open
+## Historical open snapshot (not current)
 
 ### BUG-001: Wrong cloth textures on characters
 - **Observed:** 2026-04-13
@@ -53,7 +60,7 @@ the "Fixed" section with the commit hash that resolved it.
 
 ---
 
-## Fixed
+## Historical fixed snapshot
 
 ### BUG-002: Jump not visible from retail client
 - **Fixed:** 5634e71 — Jump packet (opcode 0xF61B) now sent to server.