feat(ai-tools): catalog of AI coding CLIs, detection, enable/default, lanes for any tool (#40 A1)

server/lib/ai-tools.js loads server/data/ai-tools/*.json (38 tools, data from
Orca, MIT) plus DASHBOARD_AI_TOOLS_DIR, detects each CLI by walking PATH, and
keeps enable/default in <data dir>/ai-tools.json. shell-path.js merges the
login shell's PATH at startup and on Refresh. /api/ai-tools lists, refreshes
and toggles; /api/run/binary resolves through the catalog.

Lanes accept any catalog id (EDISABLED for a disabled one on creation, ENOTOOL
at start once a tool left the catalog). pty-run keeps the Claude/Codex
builders and builds every other tool's argv from its catalog file, pasting an
after-start prompt through a tmux buffer; every pane gets the hydrated PATH.
A per-run bypass switch appends the catalog's bypass args (Codex included).
POST /api/run now forwards sandbox/approval/resumeLast, which it dropped.
agenthub lanes add gains --tool.

server/lib/router-apply.js

@@ -185,12 +185,15 @@ function applyToCodexLane(lane, profile) {
  * @param {{id:number, cwd:string, tool:string}} lane the lane row
  * @param {string} profileName a saved profile's name, or `"native"`
  */
+const { ROUTER_CAPABLE } = require("./ai-tools");
+
 function applyRouterToLane(lane, profileName) {
   const profile = routers.getRouter(profileName); // throws ENOTFOUND
-  // `agy` has no endpoint/model override to write, so only native fits.
-  if (lane.tool === "antigravity") {
-    if (profile.builtin) return { tool: "antigravity", file: null, profile: profile.name };
-    throw Object.assign(new Error("an Antigravity lane cannot use an AI Router"), {
+  // Only Claude and Codex have an endpoint/model override to write; any other
+  // AI tool runs on its vendor's own settings, so native is the one fit.
+  if (!ROUTER_CAPABLE.has(lane.tool || "claude")) {
+    if (profile.builtin) return { tool: lane.tool, file: null, profile: profile.name };
+    throw Object.assign(new Error(`a ${lane.tool} lane cannot use an AI Router`), {
       code: "EUNSUPPORTED",
     });
   }