[#1004] docs: Remove stale AgentChattr claims from repository guidance and README credits

[realproject7]

Closes #1004

Summary

Docs-only. Removes references portraying AgentChattr / agentchattr-telegram as current QuadWork dependencies, and describes the verified current arrangement (built-in file-based JSONL chat + MCP shim). Scope limited to the three files named in #1004.

Changes

• README.md (External Tools credit block): removed the AgentChattr credit bullet. Per the ticket, no credit should imply a current dependency; the remaining credits (gh, Claude Code, Codex, Next.js/Express, node-pty, xterm.js) are untouched.
• CLAUDE.md (What is QuadWork): AgentChattr chat → the file-based project chat; stale docs/PROPOSAL.md pointer (file does not exist) → README.md for the full product overview.
• CLAUDE.md (Dependencies): replaced the two stale bullets (AgentChattr external dependency; external realproject7/agentchattr-telegram bridge) with the current, verified arrangement — built-in file-based JSONL chat (server/file-chat.js) exposed via MCP shim (server/mcp-chat-shim.js) as chat_send/chat_read, and the built-in optional Telegram bridge (server/bridges/telegram.js).

EPIC Alignment

• Batch 24 ticket docs: Remove stale AgentChattr claims from repository guidance and README credits #1004 owns only README External Tools credits, AGENTS.md, and CLAUDE.md stale-AgentChattr guidance. This diff touches exactly README.md + CLAUDE.md; AGENTS.md needed no change (see below).
• Shared invariant (describe current file-based JSONL chat + MCP shim, current arrangement, only when verified): every replacement cites a real current source file confirmed to exist.
• Out of scope, untouched: README narrative owned by docs(readme): Reframe QuadWork around governed batch delivery #1003, runtime code, tests, package versions, legacy cleanup/migration implementation (bin/quadwork.js cleanup --legacy, server/migrate-ac.js, server/ac-restore.js), and realproject7/quadwork-web.

Self-Verification

• Acceptance — rg -i agentchattr README.md AGENTS.md CLAUDE.md → no matches (exit 1). ✓
• AGENTS.md: the top-level file is untracked (locally seeded from templates/seeds/dev.AGENTS.md); it and all tracked templates/seeds/*.AGENTS.md contain zero AgentChattr text, so the acceptance criterion is already satisfied there — no edit made (minimal-change).
• Current-code verification of replacement claims:
  • File-based JSONL chat: server/file-chat.js:23 (general.jsonl), :169 (fs.appendFileSync, mode 0o600).
  • MCP shim tools: server/mcp-chat-shim.js:27 (chat_send), :39 (chat_read), :135 (serverInfo name "quadwork-chat").
  • Built-in Telegram bridge: server/bridges/telegram.js (present; discord.js alongside).
  • docs/PROPOSAL.md confirmed absent (ls → No such file); repointed to README.md (present).
  • Telegram bridge is now built-in, not the external agentchattr-telegram repo; remaining agentchattr strings live only in legacy cleanup/migration paths (bin/quadwork.js) which are explicitly out of scope and untouched.
• Scope: git diff --stat → CLAUDE.md (+3/-3), README.md (-3); no other files staged.
• CI: pending on push.

Acceptance criteria

• rg over exactly README.md, AGENTS.md, CLAUDE.md finds no AgentChattr/agentchattr text
• No credit implies a current dependency
• Current file-chat + MCP-shim arrangement described only where verified
• Legacy cleanup/migration implementation and tests untouched
• quadwork-web not edited

[project7-interns]

Verdict: APPROVE

Epic Alignment: PASS

The two-file docs diff removes the stale dependency portrayal required by #1004 and preserves the #1005 boundary.

Checked (evidence)

• Ticket contract: live gh api repos/realproject7/quadwork/issues/1004 → only README External Tools, AGENTS.md, and CLAUDE.md; diff changes README.md:254-260 and CLAUDE.md:2-8, 47-52 only.
• Architecture claims: current head server/file-chat.js:20-25,169 establishes JSONL storage and 0o600 writes; server/mcp-chat-shim.js:27-39,135 defines chat_send/chat_read and quadwork-chat.
• Acceptance scan: current-head README/CLAUDE plus local AGENTS.md → rg -i agentchattr README.md AGENTS.md CLAUDE.md has no matches; tracked tree has no top-level AGENTS.md.
• Riskiest part of this diff: replacing external-service claims; the referenced built-in Telegram bridge exists at server/bridges/telegram.js, and the replacement accurately marks it optional.
• Kill-list: scanned all new diff ranges — clean.
• CI: gh pr checks 1012 → test pass (50s).

Findings

• None.

Decision

The diff is minimal, its public architecture claims are verified against the current head, and it meets every #1004 acceptance criterion.

[realproject7]

@re2 Independent Review — APPROVE ✅ (head cc5d3ea)

Checked (evidence)

• Acceptance criterion (zero AgentChattr text in the three files) — verified on PR head: git show cc5d3ea:README.md | grep -ic agentchattr → 0; same for CLAUDE.md → 0. AGENTS.md is untracked (seeded); all tracked seeds templates/seeds/{dev,head,re1,re2}.AGENTS.md → 0 matches, so the generated AGENTS.md is clean without an edit. ✓
• New CLAUDE.md dependency claims are real — server/file-chat.js, server/mcp-chat-shim.js, server/bridges/telegram.js all exist on head; shim exposes chat_send (server/mcp-chat-shim.js:27) and chat_read (:39). ✓
• Stale pointer fix — docs/PROPOSAL.md is genuinely absent from the tree (git cat-file -e cc5d3ea:docs/PROPOSAL.md → absent); CLAUDE.md correctly redirects to README.md. ✓
• Scope — diff touches only CLAUDE.md (+3/−3) and README.md (−3, External Tools credit bullet). No runtime/tests/legacy-migration/quadwork-web changes. ✓
• CI — gh pr checks 1012 → test pass (50s). ✓

Non-blocking note: templates/seeds/butler.CLAUDE.md still points at the absent docs/PROPOSAL.md, but that file is outside #1004's scope and correctly untouched.

Verdict: APPROVE on cc5d3ea. (Recorded as a comment; shared bot account cannot self-approve on GitHub.)