docs: update project documentation for v1.65.0.0

README gains the two wave-2 CLIs (gstack-code-intelligence,
gstack-verify-gate) in the standalone-binaries table, BROWSER.md
documents BROWSE_PERSIST_STATE next to manual state save/load,
CONTRIBUTING's CI section lists the new supply-chain gates, and
CLAUDE.md's project tree reflects lib/code-intelligence/ and the
added workflows.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

README.md

@@ -245,6 +245,8 @@ Beyond the slash-command skills, gstack ships standalone CLIs for workflows that
 | `gstack-taste-update` | **Design taste learning** — writes approvals and rejections from `/design-shotgun` into a persistent per-project taste profile. Decays 5%/week. Feeds back into future variant generation so the system learns what you actually pick. |
 | `gstack-egress` | **Egress receipt auditor** — every gstack-initiated off-machine send writes a tamper-evident, hash-chained receipt to `~/.gstack/security/egress.jsonl` before the send. `list` shows what gstack attempted to send and to which host, `grants` shows the standing consent settings plus the exact command that revokes each, `verify` recomputes the hash chain and exits 3 on tamper. |
 | `gstack-context-bill` | **Token bill-of-materials** — read-only, offline audit of what an installed skills tree costs in tokens: always-on frontmatter every session pays vs per-invocation SKILL.md + forced references. `--diff` compares two trees, `--budget` enforces a ceiling, `--exact` opts into Anthropic `count_tokens` (sends file text off-machine; writes an egress receipt first, degrades to the offline estimate if the receipt can't be written). |
+| `gstack-code-intelligence` | **Code-intelligence provider picker** — wraps GBrain, Sourcebot, and Graphify behind one interface: `options`/`status` to see what's available, `select` to pick one, `index`/`search` to use it. Makes a one-time indexing offer on large repos (1,000+ tracked files; a decline is persisted). Non-local providers refuse to index until you record per-repo consent (`consent <repo> yes\|no`), the per-repo trust policy's deny and read-only tiers veto write-class operations regardless of consent, and every off-machine send writes an egress receipt. Fully optional — with nothing selected, gstack falls back to grep. |
+| `gstack-verify-gate` | **Verification stop hook (opt-in)** — blocks a Claude Code turn from ending until the project's declared verify command passes. Declare it on one line in CLAUDE.md: `<!-- gstack:verify: bun test -->`. Hooks bypass the permission system, so a declared command never runs until you trust it once per repo (`gstack-verify-gate --trust`); editing the command invalidates trust until re-granted, and every grant is audit-logged. Remove with `gstack-settings-hook remove-source --source verify-gate`. |
 | `gstack-ios-qa-daemon` | **iOS QA daemon** — Mac-side broker between an agent and a connected iPhone over USB CoreDevice. Loopback by default; `--tailnet` opens a Tailscale-facing listener with identity-gated capability tiers. Single-instance via flock on `~/.gstack/ios-qa-daemon.pid`. See [docs/howto-ios-testing-with-gstack.md](docs/howto-ios-testing-with-gstack.md). |
 | `gstack-ios-qa-mint` | **iOS allowlist manager** — owner-grant CLI for the tailnet allowlist. `grant`/`revoke`/`list` against `~/.gstack/ios-qa-allowlist.json` (mode 0600). Remote agents never auto-allowlist; this is the explicit-intent path. |
 | `gstack-ios-qa-regen` | **iOS bridge regenerator** — deterministically installs the canonical DebugBridge package, generates typed state accessors, and records the installed gstack version. Safe to rerun after source changes or upgrades. |