feat(ai-tools): omp shared + OpenCode/omp sessions, tokens, subagents; Grok hooks; resume by id

- omp-usage.js / opencode-usage.js: poll each CLI's own session store into
  sessions (tool omp/opencode), token_usage per model and subagent agents;
  transcript routes read them (omp journals, OpenCode's opencode.db).
- Grok runs the Claude hooks in ~/.claude/settings.json: its hooks are now
  recognised (hookEventName + workspaceRoot), tagged tool=grok, and their
  transcript_path dropped instead of being parsed as a Claude transcript.
- Catalog `resumeById`: omp/Grok/Cursor `--resume <id>`, OpenCode
  `--session <id>`; session ids may carry `_`. The client offers Resume for
  any tool that resumes by id.
- Kimi Code and GitHub Copilot leave the catalog (their session stores could
  not be verified).

server/__tests__/pty-run.test.js

@@ -733,7 +733,7 @@ describe("pty-run", () => {
     let savedPath;
     before(() => {
       fs.mkdirSync(BIN, { recursive: true });
-      for (const name of ["agy", "grok", "goose", "command-code"]) {
+      for (const name of ["agy", "grok", "goose", "command-code", "omp"]) {
         fs.writeFileSync(path.join(BIN, name), "#!/bin/sh\n");
         fs.chmodSync(path.join(BIN, name), 0o755);
       }
@@ -799,6 +799,35 @@ describe("pty-run", () => {
       );
     });
 
+    // omp declares `resumeById`: the id follows its flag as one argv element,
+    // in place of the resume-last args, and never one that reads as a flag.
+    it("resumes a named session for a catalog tool that declares resumeById", () => {
+      const call = captureNewSession(() =>
+        pty.spawnRun({
+          laneId: 17,
+          cwd: "/tmp/repo",
+          tool: "omp",
+          model: "opus",
+          resumeSessionId: "01a15366-27e2-734a-9247-04d5c65c1636",
+          resumeLast: true,
+          initialPrompt: "go on",
+        })
+      );
+      assert.deepEqual(paneArgv(call), [
+        at("omp"),
+        "--model",
+        "opus",
+        "--resume",
+        "01a15366-27e2-734a-9247-04d5c65c1636",
+        "go on",
+      ]);
+      assert.throws(
+        () =>
+          pty.spawnRun({ laneId: 18, cwd: "/tmp/repo", tool: "omp", resumeSessionId: "--abcdefgh" }),
+        { code: "EBADSESSION" }
+      );
+    });
+
     it("refuses a flag-shaped model id for any tool, before tmux is asked", () => {
       for (const tool of ["claude", "codex", "antigravity"]) {
         assert.throws(