upstream: official claude code updates 2026-06-18

[github-actions]

upstream changes detected

sources: anthropic/changelog, anthropic/official-docs, anthropics/claude-code, marckrenn/claude-code-changelog, shanraisshan/claude-code-best-practice
changes found: 23
files edited: 5
staleness flags: 3

what changed upstream

• [release] v2.1.181 (link)
• [commit] chore(subagents-badge): update Last Updated badge to Jun 18, 2026 and version to v2.1.181 (link)
• [commit] chore(subagents-changelog): add 2026-06-18 run entry — no drift, v2.1.181 (link)
• [commit] chore(changelog): append 2026-06-18 no-drift run entry for v2.1.181 (link)
• [commit] chore(commands): bump Last Updated badge to Jun 18 2026 and version to v2.1.181 (link)
• [commit] docs(claude-skills): update Last Updated badge to v2.1.181, Jun 18 2026 (link)
• [commit] changelog(claude-skills): append 2026-06-18 no-drift entry for v2.1.181 (link)
• [commit] Bump Last Updated badge to v2.1.181 (Jun 18, 2026 9:39 AM PKT) (link)
• [commit] Add 2026-06-18 concepts drift-check changelog entry (v2.1.181) (link)
• [commit] append Jun 18 development workflows changelog entry (link)
• [commit] update development workflows table: stars + counts + Matt Pocock workflow (Jun 18) (link)
• [commit] v2.1.181 (link)
• [commit] v2.1.181 (link)
• [commit] v2.1.181 - remove (link)
• [commit] v2.1.181 - edit (link)
• [commit] v2.1.181 - edit (+44 tokens) (link)
• [commit] v2.1.181 - edit (+42 tokens) (link)
• [commit] v2.1.181 - edit (link)
• [commit] v2.1.181 - edit (-121 tokens) (link)
• [commit] v2.1.181 - edit (link)
• [commit] v2.1.181 - edit (link)
• [changelog] Claude Code changelog updated (link)
• [docs_change] Official Claude Code docs updated (link)

staleness flags

file	claim	reality	severity
docs/tips/fast-mode.md	fast mode keeps you on opus. it does not switch to a cheaper or smaller model.	v2.1.181 adds /config key=value syntax that can switch models mid-session. fast mode behavior may interact differently with this new capability.	medium
docs/session-workflow.md	by the time you see the prompt, hooks are loaded, context is cached, and claude knows your conventions.	v2.1.181 fixes a startup regression where managed-settings fetch could block up to 15 seconds on degraded networks. the load flow is still correct but startup timing guarantees changed.	low
docs/tips/mcp-integration.md	startup latency. MCP servers launch on first tool call. the first invocation takes 1-5 seconds.	v2.1.181 adds MCP OAuth browser pages that auto-close on success, changing the first-invocation experience for OAuth-enabled servers.	low

proposed edits

• docs/tips/fast-mode.md: new feature affects fast mode interaction patterns
• docs/tips/hooks-v2.md: new config syntax can change hook assumptions mid-session
• docs/session-workflow.md: v2.1.181 fixes startup blocking regression
• docs/tips/mcp-integration.md: improved OAuth flow for MCP servers
• docs/cost.md: v2.1.181 fixes a startup performance issue that affected perceived cost

review checklist

• staleness flags accurate?
• version numbers and pricing correct?
• proposed edits read naturally?

auto-generated by official-watcher