docs(work): map testing and editor northstars

Add repo-local northstars and ready slices for testing strategy, LSP/editor completion, and hemplate highlighting boundaries.

work/slices/SLICE-0002-browser-runtime-confidence.md

@@ -0,0 +1,40 @@
+---
+id: SLICE-0002
+type: slice
+status: ready
+parent: NS-0001
+title: Keep html_examples browser smoke as runtime confidence proof
+refs:
+  - REQUIREMENTS.md
+  - hemx-xtask/src/main.rs
+  - examples/html_examples/README.md
+  - examples/html_examples/src/main.rs
+---
+
+## Objective
+
+Keep `html-examples-smoke` as the repo-owned browser proof for no-reload dynamic interactions, revealed fallback, interval triggers, and the htmx-equivalent gallery behaviors.
+
+## Authority
+
+`REQUIREMENTS.md` `test/006`, `test/013`, `test/014`, `convention/005`, `convention/014`, and `examples/012` constrain the smoke: no `/tmp` scripts, no navigation/reload fallback, and deterministic browser coverage.
+
+## Close when
+
+- The smoke covers click-to-edit, edit-row, inline validation, active search, delete row, lazy load, click-to-load, infinite/reveal, progress interval, value select, reset input, and revealed fallback without IntersectionObserver.
+- The no-navigation/no-reload guard wraps dynamic interactions.
+- Failures identify the named smoke path.
+
+## Verification
+
+- `cargo test -p hemx-xtask`
+- `cargo run -p hemx-xtask -- html-examples-smoke`
+
+## Non-goals
+
+- Do not add Playwright, Selenium, or a second browser runner without a separate decision.
+- Do not move smoke scripts to `/tmp` or untracked files.
+
+## Evidence
+
+`hemx-xtask/src/main.rs` owns the CDP-driven smoke command and inline smoke scripts.