feat(claude-code): update placemat for Claude Code v2.1.296

[dommango]

Summary

Daily sync of the Claude Code placemat from v2.1.295 to v2.1.296 (released 2026-10-09), per claude-code/PIPELINE.md and claude-code/sources.json.

• npm dist-tags.latest → 2.1.296; cross-checked against https://code.claude.com/docs/en/changelog, which has a matching Claude Code 2.1.296 (October 9, 2026) entry.
• Diffed commands.md, settings-reference.md and hooks.md against the existing inventory — no new slash command, settings key, or hook/MCP-config field this release.

Content changes

• autoCompactWindow — new row in the Agent YAML Frontmatter group (card-skills): the key was already in inventory.settings from an earlier pass but had no placemat row; v2.1.296 adds subagent-frontmatter / --agents JSON support, confirmed via the changelog (not yet in sub-agents.md).
• CLAUDE_CODE_WORKFLOW_SUBAGENT_MODEL and CLAUDE_CODE_OVERLOADED_RETRY_MAX_DELAY_MS — two new Env Vars rows, both new in v2.1.296, confirmed via the changelog (not yet in env-vars.md).
• CLAUDE_CODE_MAX_MCP_DESCRIPTION_LENGTH — added a note: its default cap moved from 2,048 to 4,096 characters in v2.1.296 (distinct from the 16,384-char tool-search limit v2.1.295 already covers).
• changelog.html: new CC v2.1.296 section under October 2026; month summary and release count bumped.
• index.html: .release-tag, .print-head and footer Content synced date bumped to match (2026-10-09, the v2.1.296 release date); changelog.html's own stale footer date also corrected to match.
• sources.json: inventory.fetched bumped to 2026-10-10, with gotchas recording what was and wasn't yet confirmed in the reference docs.

Checklist

• node scripts/build-changes.js claude-code — regenerated changes.json + feed.xml
• node tests/placemat.test.js claude-code — 54 passed, 0 failed
• Self-review: technical accuracy against vendor sources, changelog entry quality, consistency with other cards
• Merge gate: code-review skill run against this diff (independent of the above), verdict posted as a PR comment, then merge on green CI + no CRITICAL/HIGH finding

🤖 Generated with Claude Code

https://claude.ai/code/session_01EPAeaBpKMKi4qfu1bWS265

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Generated by Claude Code

[dommango]

Merge-gate review (code-review skill)

Pass 1 (against a32242b): 2 findings.

1. claude-code/sources.json — a gotcha note I'd written claimed the v2.1.295 16,384-char tool-search description limit "already has its own row" in the placemat. Verified: no such row exists. Fixed in 1854edd — the note now correctly says that limit is untracked and flags it for a future sync.
2. claude-code/index.html — pre-existing class="new" / <!-- added:vX.Y.Z --> litter on a couple of rows (e.g. CLAUDE_CODE_WORKFLOW_MAX_CONCURRENT_AGENTS, CLAUDE_CODE_WEBFETCH_DEADLINE_MS), which AGENTS.md's "Do not" list forbids. Not introduced by this PR — these predate this sync and sit in a table this PR happens to add adjacent rows to.

Pass 2 (re-review against 1854edd, after the fix): finding 1 confirmed resolved. Finding 2 resurfaced, again explicitly characterized as pre-existing and not introduced by this diff — "a missed opportunity to fix in passing," not a defect in this PR's content.

Verdict: no CRITICAL/HIGH finding in this PR's diff. node tests/placemat.test.js claude-code — 54/54 passed; build-changes.js --check clean. The remaining class="new" litter (finding 2) is a real, separate bug but pre-existing on main well before this sync — worth a dedicated follow-up PR rather than scope-creeping into a routine content sync.

Proceeding to merge per the pipeline's Step 10 merge gate.

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Generated by Claude Code