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-0001-fast-focused-full-verification.md

@@ -0,0 +1,41 @@
+---
+id: SLICE-0001
+type: slice
+status: ready
+parent: NS-0001
+title: Lock fast focused and full verification tiers
+refs:
+  - REQUIREMENTS.md
+  - README.md
+  - AGENTS.md
+  - hemx-xtask/src/main.rs
+---
+
+## Objective
+
+Make the verification ladder executable and documented so contributors know when to run fast crate tests, `html-examples-smoke`, and the full xtask authority wrapper.
+
+## Authority
+
+`README.md`, `AGENTS.md`, and `REQUIREMENTS.md` `test/004`, `test/006`, `test/015`, and `test/016` already define the tier boundary and full local timeout expectation.
+
+## Close when
+
+- README/agent guidance names fast crate tests, focused browser smoke, and full xtask authority separately.
+- `cargo run -p hemx-xtask -- test` remains the full wrapper rather than being bypassed by an undocumented shard.
+- Any shard split is deterministic and documented under the xtask wrapper.
+
+## Verification
+
+- `cargo run -p hemx-xtask -- html-examples-smoke`
+- `cargo run -p hemx-xtask -- test`
+- `redgate health --strict`
+
+## Non-goals
+
+- Do not add a new test harness outside xtask.
+- Do not split the full wrapper unless the measured runtime exceeds the budget.
+
+## Evidence
+
+The current full wrapper has passed locally within the documented 10 minute budget; this slice preserves that authority and makes future splitting explicit only when needed.