docs: record P1 observability progress

docs/superpowers/plans/2026-07-24-p1-observability.md

@@ -20,6 +20,27 @@
 
 **验证约定：** Rust 改动 → 定向测试 + `cargo test --lib` + `cargo clippy --all-targets --all-features -- -D warnings` + `cargo build`；前端 → `cd webui && npm run check && npm run build`。前端无单测框架，勿虚构。
 
+## Implementation Progress (2026-07-24)
+
+**Branch:** `feat/webui-p1`
+
+**Completed and reviewed:**
+- Task 1.1 Metrics collector — `11474c0`
+- Task 1.2 optional provider pricing — `115e77f`
+- Task 1.3 AgentLoop instrumentation — `5d0cf5b`
+- Task 2.1 runtime introspection — `aa989cb`
+- Task 2.2 protected `GET /api/status` — `b14edc4`, with review fixes in `87cf500`
+
+**Current verification baseline:** `cargo test --lib` 349 passed; `cargo clippy --all-targets --all-features -- -D warnings` and `cargo build` passed after Task 2.2.
+
+**Resume at:** Task 2.3, protected `GET /api/tools`. No Task 2.3 code has been started. Continue with subagent-driven development and run separate spec-compliance and code-quality reviews before marking it complete.
+
+**Restore on another computer:**
+```bash
+git fetch origin
+git switch --track origin/feat/webui-p1
+```
+
 ---
 
 ## Chunk 1: Metrics 后端