fix(antigravity): send a bare ide_version, not the whole User-Agent

devlog/_plan/260817_wave5_execution/070_wave5c_cursor.md

@@ -68,3 +68,29 @@ its CI could be judged. For #1900 the fork run was approved, waited to `complete
 
 `#1866` needs no decision here: it is an issue with no PR, and the structured Computer Use
 payload it describes is a design task rather than a merge.
+## WP7 outcome
+
+| PR | Outcome | Evidence |
+|----|---------|----------|
+| #1900 | merged | `2b12521ee` — CI success 01:12:10Z, merged 01:15:18Z |
+| #1895 | merged via #1951 | its blocking review finding fixed on top of its commits |
+| #1951 | merged | `93e521c80` — CI success 01:33:45Z, merged 01:37:50Z |
+| #1953 | merged | `9eb3a101a` — CI success 01:57:51Z, merged 01:59:12Z |
+| #1887 | **held** | must migrate five items into #1896 first; closing it as superseded would delete the catalog-derived guard |
+| #1896 | **held** | needs #1887's `cursorNativeExecUsesCodeModeBridge` before it can be canonical |
+| #1903 | **held** | conflicts alone on `dev`; needs an author rebase, and is a ~32-file review surface |
+| #1866 | **not started** | no PR exists; explicitly scoped out of #1900 |
+
+**The defect I introduced and the audit caught.** #1951 fixed #1895's blocker — code mode is
+decided from `freeform` metadata rather than the name `exec` — but my port of the shell-bridge
+predicate dropped the Cursor original's `!tool.namespace` requirement. A namespaced MCP tool
+(`mcp__docker__exec_command`) then cancelled code mode on a genuine code-mode turn, silently
+stripping the guidance. It failed *safe* — generic rather than false guidance — which is exactly
+why nothing caught it, and why an audit that runs the predicate against adversarial catalogs
+beats one that reads it. Fixed in #1953, driven red first.
+
+A second reviewer then probed ten catalog shapes — empty-string namespace, non-boolean truthy
+`freeform`, mixed namespaced and bare bridges — and found no remaining misclassification. Worth
+recording one behavior it judged correct: when `tool_choice` forces `exec`, a catalog holding
+both a freeform `exec` and a bare `exec_command` still classifies as code mode, because the
+bridge is filtered out of visibility first. Naming an unreachable tool would be the worse answer.

devlog/_plan/260817_wave5_execution/080_wave5d_antigravity.md

@@ -1,5 +1,11 @@
 # WP8 — Wave 5D: Antigravity fingerprint and discovery
 
+> **Read the two correction sections below before the original text.** The order and the
+> #1836 disposition in this header were both overturned during execution: the real order is
+> `#1891 → #1897 → #1889` for merge-cleanliness but **`#1889` must land first** for
+> correctness, and #1836 was already closed. The original text is left standing as the record
+> of what changed.
+
 ```
 #1889 → #1891 → #1897   (then close #1836 as superseded)
 ```
@@ -151,3 +157,31 @@ type.
 | #1889 | **blocked** | unsponsored `src/oauth/` surface; draft |
 | #1836 | already closed | nothing to do |
 | #1906 | open issue | the undocumented-`v1internal` policy call belongs to the user |
+## WP8 outcome — the wave was smaller than planned
+
+Two of the four items resolved themselves before this phase ran, which the Gate 0 inventory
+could not have known:
+
+| Item | State | Evidence |
+|------|-------|----------|
+| #1897 | **already merged** | `aca3c0241`, 2026-08-18T01:31:08Z — ancestor of `origin/dev` |
+| #1836 | **already closed** | confirmed at WP6; the plan's "close as superseded" was a no-op |
+| #1891 | **held** | draft, four readiness boxes unticked — the author's gate |
+| #1889 | **blocked** | `unsponsored_surface` on `src/oauth/google-antigravity.ts` |
+
+**#1891 verified independently rather than taken on trust.** Merged onto current `dev` in a
+scratch worktree: clean, then `bun test` across `client-fingerprint`,
+`google-antigravity-wire` and `google-antigravity-oauth` gives **75 pass / 0 fail**, with
+`tsc --noEmit` clean. Its description carries the kind of evidence a fingerprint change needs —
+a decompiled token sequence with an address, and a live `fetchAvailableModels` +
+`generateContent` round trip — because the failure mode here is silent upstream rejection, not
+a failing test.
+
+**#1889 is the second auth-surface block of this campaign**, after #1888.
+`.github/scripts/pr-sponsored-surface.cjs` lists `src/oauth/` under `RESTRICTED_PREFIXES`, and
+`MAINTAINERS.md` requires explicit security review there. The `maintainer-sponsored` label is
+the record that the review happened, so an agent applying it to unblock its own merge would
+make that record false rather than merely skip a step. Reported, not cleared.
+
+The planned order (`#1889 → #1891 → #1897`) is therefore moot: #1897 is in, and the remaining
+two are gated on a human decision each — one a readiness checklist, one a security review.

devlog/_plan/260817_wave5_execution/090_wave6_closeout.md

@@ -76,3 +76,31 @@ of them:
 
 Neither is affected by the close-on-dev-merge decision: both are blocked *before* merge, so the
 policy that governs when a merged fix closes its issue never reaches them.
+## WP9 gate result
+
+Run on the promotion candidate (local `dev`, 6 commits ahead of `origin/dev` at the time):
+
+| Gate | Result |
+|------|--------|
+| `bun test --isolate tests` | **12805 pass, 10 skip, 0 fail**, 159382 expect() calls across 826 files (452s) |
+| `bun run typecheck` | clean |
+| `bun run privacy:scan` | passed |
+
+### What actually closed, under the close-on-dev-merge decision
+
+| Closed | Landed via |
+|--------|-----------|
+| #1894 | #1739 through PR #1921 |
+| #1843 | #1860, already released in v2.24.0 |
+| #1899 | superseded by the ordering assertion in PR #1923 |
+
+Everything else stayed open, and none of it for release-timing reasons — which is the point
+worth making about the policy change. It removed a gate that was never what held these back.
+
+### Promotion state
+
+`dev` carries nine merged PRs from this campaign. `preview` and `main` are both behind it, and
+`dev`'s own hosted CI has no completed green run on its current head — the runs at `2b12521ee`
+and `aca3c0241` were both cancelled by supersession as later merges landed. The local full
+suite above is the evidence that exists; a hosted run on the exact promotion head is the
+evidence that does not, and promotion should carry that distinction rather than bury it.

src/oauth/google-antigravity.ts

@@ -12,7 +12,7 @@
 import { OAuthCallbackFlow, type OAuthCallbackFlowOptions } from "./callback-server";
 import { generatePKCE } from "./pkce";
 import type { OAuthController, OAuthCredentials } from "./types";
-import { antigravityUserAgent, ANTIGRAVITY_GOOG_API_CLIENT_UA } from "../adapters/client-fingerprint";
+import { antigravityUserAgent, ANTIGRAVITY_GOOG_API_CLIENT_UA, ANTIGRAVITY_IDE_VERSION } from "../adapters/client-fingerprint";
 
 const CLIENT_ID = process.env.GOOGLE_ANTIGRAVITY_CLIENT_ID
   || "1071006060591-tmhssin2h21lcre235vtolojh4g403ep.apps.googleusercontent.com";
@@ -111,7 +111,12 @@ async function onboardProject(accessToken: string, signal?: AbortSignal): Promis
     const response = await fetch(`${DAILY_API}/${API_VERSION}:onboardUser`, {
       method: "POST",
       headers: { Authorization: `Bearer ${accessToken}`, Accept: "*/*", "Content-Type": "application/json", "User-Agent": antigravityUserAgent(), "x-goog-api-client": ANTIGRAVITY_GOOG_API_CLIENT_UA },
-      body: JSON.stringify({ tier_id: "free-tier", metadata: { ide_type: "ANTIGRAVITY", ide_name: "antigravity", ide_version: antigravityUserAgent() } }),
+      // `ide_version` is a version, not a User-Agent. `antigravityUserAgent()` returns the whole
+      // header — `antigravity/ide/2.5.5 (aidev_client; os_type=...; arch=...)` — so onboarding was
+      // sending a parenthesized UA string in a field the real client fills with `2.5.5`. It is a
+      // fingerprint mismatch rather than a crash, which is why nothing failed: the request still
+      // succeeds, it just does not look like Antigravity.
+      body: JSON.stringify({ tier_id: "free-tier", metadata: { ide_type: "ANTIGRAVITY", ide_name: "antigravity", ide_version: ANTIGRAVITY_IDE_VERSION } }),
       signal: requestSignal(signal),
     });
     if (!response.ok) {

tests/google-antigravity-oauth.test.ts

@@ -4,6 +4,7 @@ import { mkdirSync, rmSync } from "node:fs";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { getCredential, saveCredential } from "../src/oauth/store";
+import { ANTIGRAVITY_IDE_VERSION } from "../src/adapters/client-fingerprint";
 
 const realFetch = globalThis.fetch;
 afterEach(() => { globalThis.fetch = realFetch; });
@@ -50,6 +51,29 @@ describe("antigravity project discovery", () => {
     expect(onboardCalls).toBe(2);
   });
 
+  // `ide_version` was sending `antigravityUserAgent()` — the whole header, parentheses and all —
+  // where the real client sends a bare version. Nothing failed, because the request still
+  // succeeds; it just does not look like Antigravity. A fingerprint is only worth having if it
+  // matches, so pin the field rather than trusting that nobody re-reaches for the UA helper.
+  test("onboardUser sends a bare ide_version, not the User-Agent string", async () => {
+    let onboardBody: string | undefined;
+    routeFetch((url, init) => {
+      if (url.includes(":loadCodeAssist")) return new Response(JSON.stringify({}), { status: 200 });
+      if (url.includes(":onboardUser")) {
+        onboardBody = typeof init?.body === "string" ? init.body : undefined;
+        return new Response(JSON.stringify({ done: true, response: { cloudaicompanionProject: "p" } }), { status: 200 });
+      }
+      return new Response("no", { status: 404 });
+    });
+
+    await discoverAntigravityProject("tok");
+
+    const metadata = JSON.parse(onboardBody ?? "{}").metadata as { ide_version?: string };
+    expect(metadata.ide_version).toBe(ANTIGRAVITY_IDE_VERSION);
+    expect(metadata.ide_version).not.toContain("antigravity/ide/");
+    expect(metadata.ide_version).not.toContain("(");
+  });
+
   test("returns undefined when onboardUser aborts with a hard 4xx", async () => {
     routeFetch((url) => {
       if (url.includes(":loadCodeAssist")) return new Response(JSON.stringify({}), { status: 200 });