Stale FD crash fixed; OAuth account mismatch handled

What's changed

• Added Tool(param:value) syntax for permission rules to match a tool's input parameters (with * wildcard), e.g. Agent(model:opus) to block Opus subagents
• Skills in nested .claude/skills directories now load when working on files there; on a name clash, the nested skill appears as <dir>:<name> so both stay available
• Nested .claude/ directories: the agent, workflow, and output-style closest to the working directory now wins when names collide; project-scope workflow saves now target the closest existing .claude/workflows/
• Improved auto mode: subagent spawns are now evaluated by the classifier before launch, closing a gap where a subagent could request a blocked action without review
• Improved /doctor with consistent flat tree layout across all sections, clearer section status icons, and highlighted command names
• Improved the skill listing truncation warning to show how many skill descriptions are affected
• Changed the workflow prompt keyword to use a purple shimmer highlight and trigger only on explicit phrases like "run a workflow" or "workflow:", not on any mention of the word
• Improved Remote Control error messages: connection failures now show a persistent red "/rc failed" indicator in the footer, and the "not yet enabled" error now explains whether it's a gate, a check failure, stale entitlement, or org policy
• /bug now requires a description before submitting, and no longer uses model-refusal text as the GitHub issue title
• Fixed a crash (out-of-memory) when the CLI inherits a stale websocket/OAuth file-descriptor environment variable from a parent process
• Fixed Claude in Chrome silently failing to connect when the OAuth token belongs to a different account than the Claude Code login
• Fixed nested .claude/skills skills with directory-qualified names being blocked by permission prompts in non-interactive runs
• Fixed several subagent issues: viewing a subagent's transcript now shows tool results and live progress, messages sent while it finishes its turn are no longer dropped, and backgrounding a running subagent (ctrl+b) no longer restarts it from scratch
• Fixed claude agents workers failing with 401 Invalid bearer token when the daemon was started from a shell with a custom API gateway via ANTHROPIC_BASE_URL and ANTHROPIC_AUTH_TOKEN
• Fixed compaction not honoring --fallback-model: compaction now falls back to the configured fallback model chain on overload or model-availability errors
• Fixed model requests continuing to fail with auth errors after credentials were refreshed outside the session, due to a stale cached request configuration
• Fixed background sessions created with /bg or ←← after a turn finished showing "Working" forever in the agents list
• Fixed CLAUDE_CODE_PLUGIN_KEEP_MARKETPLACE_ON_FAILURE=1 preventing fresh marketplace installs from cloning
• Fixed MCP server-level specs (mcp__server, mcp__server__*, mcp__*) in subagent disallowedTools being silently ignored
• Fixed vim mode undo: u now steps through NORMAL/VISUAL-mode commands one at a time instead of merging commands in quick succession into a single undo step
• Fixed statusline links with custom URI schemes (e.g. vscode://) not opening when clicked in claude agents
• [VSCode] Fixed pressing Esc to dismiss a CJK IME candidate window canceling the running Claude task