upstream: official claude code updates 2026-06-15

[github-actions]

upstream changes detected

sources: anthropic/official-docs, shanraisshan/claude-code-best-practice
changes found: 11
files edited: 4
staleness flags: 5

what changed upstream

• [commit] chore(badge): update subagents Last Updated to Jun 15, 2026 (v2.1.176) (link)
• [commit] chore(changelog): append 2026-06-15 subagents drift check — no drift (v2.1.176) (link)
• [commit] chore(changelog): add Jun 15 no-drift entry for commands report (v2.1.176) (link)
• [commit] chore(commands): bump Last Updated badge to Jun 15, 2026 11:09 AM PKT (link)
• [commit] chore(skills): update Last Updated badge to Jun 15, 2026 10:08 AM PKT (link)
• [commit] chore(skills-changelog): add 2026-06-15 no-drift entry for v2.1.176 (link)
• [commit] chore(readme): bump Last Updated badge timestamp to 9:39 AM PKT (link)
• [commit] chore(changelog): append concepts drift-check entry for Jun 15 — v2.1.176, no drift (link)
• [commit] chore(changelog): append Jun 15 development-workflows run entry (link)
• [commit] chore(readme): refresh DEVELOPMENT WORKFLOWS table — Jun 15 run (link)
• [docs_change] Official Claude Code docs updated (link)

staleness flags

file	claim	reality	severity
docs/tips/fast-mode.md	fast mode now coexists with effort levels (--effort low	medium	high
docs/tips/hooks-v2.md	five handler types: command, http, prompt, agent, mcp_tool	v2.1.175+ introduces managed settings (enforceAvailableModels) that affects prompt and agent hooks. hooks selecting models may silently fall back to allowed models	medium
docs/tips/settings-hierarchy.md	settings schema documented as stable	v2.1.172+ may have changed settings schema. doc recommends checking /doctor or examples for current field names	low
docs/cost.md	monitor tool (v2.1.98+) is event-driven, costs zero tokens when idle	v2.1.176+ reaches feature maturity but bedrock/vertex AI/foundry support still not confirmed. doc should note this caveat	low
docs/tips/monitor.md	not available on bedrock, vertex AI, or microsoft foundry (yet)	still true as of v2.1.176, but status has been mature for several releases. doc should clarify when this limitation will be resolved or if it's permanent	low

proposed edits

• docs/tips/fast-mode.md: v2.1.176 introduces model restriction enforcement that affects fast mode behavior
• docs/tips/hooks-v2.md: v2.1.175 introduces enforceAvailableModels which silently changes hook behavior
• docs/session-workflow.md: clarify cache efficiency of /cd feature introduced in v2.1.169
• docs/cost.md: v2.1.176 data shows monitor is mature but cloud provider support still unclear

review checklist

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

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