feat(ai-tools): Settings → AI Tools, Default/Other lane picker, per-run bypass switch (#40 A1)

Settings → Dashboard gains an AI Tools section (installed tools with
Enabled/Disabled and Set default, available ones with a homepage link,
Refresh). useAiTools shares one catalog copy across the app and replaces
LANE_TOOL_LABEL. The Add-lane modal picks Default (<tool>) or Other…; the
router row reads Native (<tool>) and disables AI Router profiles for tools
that cannot use one. The run form gives catalog tools resume and a red
per-run Bypass permissions switch (Codex too). Claude Code / Codex settings
tabs hide while that tool is disabled. The Workspace probes each lane tool's
CLI fresh.

Docs: CLAUDE.md tool/bypass rule, AGENTS.md, LANES.md, API.md, CLI.md,
server/README.md, OpenAPI fragment + regenerated openapi.yaml.

client/src/i18n/locales/en/lanes.json

@@ -45,7 +45,6 @@
   "addLaneRouterHint": "Native talks to the vendor's own API. An AI Router profile is written into this lane's own config when it is created.",
   "addLaneRouterLabel": "Model endpoint",
   "addLaneRouterLoading": "Loading router profiles…",
-  "addLaneRouterNative": "Native",
   "addLaneRouterProfileLabel": "Router profile",
   "addLaneSetupClose": "Close",
   "addLaneSetupMcp": "MCP servers",
@@ -54,9 +53,11 @@
   "addLaneSetupTitle": "Setup",
   "addLaneTitleLabel": "Title",
   "addLaneTitlePlaceholder": "Optional",
-  "addLaneToolClaude": "Claude Code",
-  "addLaneToolCodex": "Codex",
-  "addLaneToolAntigravity": "Antigravity",
+  "addLaneToolDefault": "Default ({{tool}})",
+  "addLaneToolOther": "Other…",
+  "addLaneNoTools": "No AI tool is installed and enabled.",
+  "addLaneNoToolsLink": "Open Settings → AI Tools",
+  "addLaneRouterNativeTool": "Native ({{tool}})",
   "addLaneToolHint": "Which CLI drives this lane. Cannot be changed later.",
   "addLaneWorktreeDetached": "(detached)",
   "addLaneWorktreesMore": "+{{count}} more",
@@ -218,6 +219,8 @@
   "renameLabel": "Rename this lane",
   "reorderHint": "Drag to reorder · Alt+←/→",
   "router.applied": "Applied.",
+  "router.native": "Native ({{tool}})",
+  "router.nativeOnly": "{{tool}} runs on its own settings — AI Router profiles work with Claude Code and Codex only.",
   "router.appliedRestart": "Applied, but the session running in this lane still uses the old models — restart it to take effect.",
   "router.label": "Model",
   "router.restart": "Restart",