fix: update stale docs/README.md references to docs/architecture/README.md (#7053)

fix(docs): update stale docs/README.md references to docs/architecture/README.md

The file docs/README.md was removed in a previous commit but references
in AGENTS.md, ARCHITECTURE.md, and CLAUDE.md were not updated. The
expanded check_doc_paths.sh now catches these stale references.

AGENTS.md

@@ -86,7 +86,7 @@ This file contains repository-wide rules. Use the nearest subdirectory
 - CI gates: `.github/workflows/ci.yml`.
 - PR format: `.github/pull_request_template.md`.
 - Architecture routing: `ARCHITECTURE.md` and `docs/architecture/README.md`.
-- Knowledge-base index and documentation rules: `docs/README.md`.
+- Knowledge-base index and documentation rules: `docs/architecture/README.md`.
 - Agent skills: `.agents/skills/*/SKILL.md`.
 
 Do not commit one-shot plans, trackers, migration ledgers, benchmark snapshots,

ARCHITECTURE.md

@@ -62,7 +62,7 @@ rustfs/                      # Workspace root (virtual manifest)
 │   ├── utils/               # Pure utility functions
 │   ├── ...                  # (see "Crate Reference" below)
 │   └── e2e_test/            # End-to-end integration tests
-└── docs/                    # Agent knowledge base: contracts, runbooks, testing rules (index: docs/README.md)
+└── docs/                    # Agent knowledge base: contracts, runbooks, testing rules (index: docs/architecture/README.md)
 ```
 
 ### Main Crate Layers (`rustfs/src/`)

CLAUDE.md

@@ -27,7 +27,7 @@ make build-docker BUILD_OS=ubuntu22.04
 
 ## Where to look (do not duplicate here)
 
-- Agent knowledge base index and doc-writing rules: [docs/README.md](docs/README.md)
+- Agent knowledge base index and doc-writing rules: [docs/architecture/README.md](docs/architecture/README.md)
 - Crate membership: `Cargo.toml` `[workspace].members`
 - Architecture, layering, crate map: [ARCHITECTURE.md](ARCHITECTURE.md)
 - Migration guardrails & readiness contracts: [docs/architecture/](docs/architecture/README.md)