docs: standardize AGENTS.md to CFWOS template format

Update AGENTS.md to align with the CFWOS agent instructions template:
- Add mandatory reading notice linking to root CFWOS AGENTS.md
- Rename "RULE 0 - THE FUNDAMENTAL OVERRIDE PEROGATIVE" to simpler
  "RULE 0 - HUMAN OVERRIDE" for consistency across repos
- Soften authoritative language while preserving the same semantics
- Add cross-reference to ../AGENTS.md for meta-improvement obligation
  and tool guides

Also includes Cargo.lock updates from dependency resolution.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: greenforestpath

AGENTS.md

@@ -1,12 +1,14 @@
 # AGENTS.md — beads_rust (br)
 
-> Guidelines for AI coding agents working in this Rust codebase.
+> **MANDATORY**: Read this file AND `CLAUDE.md` at session start. Re-read after any restart, compaction, or tool crash.
+>
+> **Also read**: `../AGENTS.md` for root CFWOS behavioral rules (meta-improvement obligation, tool guides, rehydration protocol).
 
 ---
 
-## RULE 0 - THE FUNDAMENTAL OVERRIDE PEROGATIVE
+## RULE 0 - HUMAN OVERRIDE
 
-If I tell you to do something, even if it goes against what follows below, YOU MUST LISTEN TO ME. I AM IN CHARGE, NOT YOU.
+If the user tells you to do something that conflicts with rules below, **the user wins**. They are in charge, not you.
 
 ---