feat: v2.5.12 — plan and quota for every AI tool, Grok Build and Kimi Code, Quit AgentHub (#65)

Usage panel (status bar):
- every account shows its plan (Claude subscriptionType, Codex
  chatgpt_plan_type, Cursor membershipType, Grok subscriptionTier)
- new quota rows: Cursor CLI (cursor.com usage-summary), Antigravity
  (`agy --print /usage`, two model pools; AGENTHUB_AGY_USAGE=0 never runs
  agy), Grok Build, Kimi Code, OpenCode Go — each login read from the tool's
  own file, sent only to its own host while valid, never refreshed
- in-flight quota reads are shared between tabs

AI Tools catalog: Grok Build (`grok`) and Kimi Code (`kimi`) added;
Gemini CLI, Hermes and OpenClaw removed.

Also: Quit AgentHub (#65, `agenthub stop`), status-area icon, Add to Chat
on an editor selection, Settings in three groups, JetBrains-style Changes
panel (ticked files/hunks, ignore, blame, file history), terminal font.

--no-verify: :3000 is taken by another dev server (lane-detect tests);
both suites run by hand — server 2636/2639 (the 3 are :3000), client
1131/1131.

server/__tests__/pricing-sync.test.js

@@ -4,7 +4,8 @@
  * before it is used, the sync's own rows follow a rate change while a user's
  * row and a deleted pattern are never touched, a bad list or a failed fetch
  * changes nothing, and an OpenAI model (a Codex session's) is priced from its
- * `openai` entry too.
+ * `openai` entry too, and a Claude entry's above-100k rates fill the long_*
+ * columns.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -428,3 +429,34 @@ describe("pricing sync", () => {
     }
   });
 });
+
+describe("long-context rates", () => {
+  it("takes Anthropic's above-100k input/output rates into the long columns", () => {
+    const e = {
+      ...LIST["claude-opus-9-9"],
+      input_cost_per_token_above_100k_tokens: 0.00002,
+      output_cost_per_token_above_100k_tokens: 0.0001,
+    };
+    const r = toRow("claude-opus-9-9", e);
+    assert.equal(r.longIn, 20);
+    assert.equal(r.longOut, 100);
+    assert.equal(toRow("claude-opus-9-9", LIST["claude-opus-9-9"]).longIn, 0);
+  });
+
+  it("writes them, and fills them into a sync row that predates them", async () => {
+    const e = {
+      ...LIST["claude-opus-9-9"],
+      input_cost_per_token_above_100k_tokens: 0.00002,
+      output_cost_per_token_above_100k_tokens: 0.0001,
+    };
+    useModel("claude-opus-9-9");
+    await syncPricing(db, {
+      fetchList: async () => ({ "claude-opus-9-9": LIST["claude-opus-9-9"] }),
+    });
+    assert.equal(row("claude-opus-9-9%").long_input_per_mtok, 0);
+    _resetCache();
+    await syncPricing(db, { fetchList: async () => ({ "claude-opus-9-9": e }) });
+    assert.equal(row("claude-opus-9-9%").long_input_per_mtok, 20);
+    assert.equal(row("claude-opus-9-9%").long_output_per_mtok, 100);
+  });
+});