[Doc] Fix review comments on precheck-pr skill

- Fix NPU skill name in readme to match declared name
- Fix base-branch detection to use explicit fallback
- Fix title format reference to point to docs/contributing/README.md
- Move /precheck-pr prompt to top of PR template

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Signed-off-by: hsliu <liuhongsheng4@huawei.com>

.claude/skills/precheck-pr/SKILL.md

@@ -22,11 +22,10 @@ Default to quick if unsure. Run full before marking a PR "ready for review."
 
 ```bash
 BASE=$(git merge-base HEAD origin/main 2>/dev/null || git merge-base HEAD main 2>/dev/null)
+BASE=${BASE:-main}
 git diff --name-only ${BASE}...HEAD
 ```
 
-If no base is found, use `main`.
-
 ### Step 2: Validate PR Title
 
 Check the most recent commit message (or branch name if no commit yet) against the project convention. Valid prefixes:

.claude/skills/precheck-pr/references/checklists.md

@@ -6,7 +6,7 @@ Each item is a concrete check to run against the diff. ✗ = fix before PR. ⚠
 
 ## All PRs: Title Format (check first)
 
-PR title must follow the project convention documented in CLAUDE.md:
+PR title must follow the project convention documented in `docs/contributing/README.md`:
 
 | Prefix | Applies to |
 |--------|-----------|

.claude/skills/readme.md

@@ -26,8 +26,8 @@ include:
   format, catches dead code, verifies accuracy/perf claims, and confirms merge
   readiness
 - `review-pr`: provides a structured workflow for reviewing pull requests
-- `vllm-omni-npu-upgrade`: upgrades NPU model runners to align with the latest
-  vllm-ascend NPUModelRunner
+- `vllm-omni-npu-model-runner-upgrade`: upgrades NPU model runners to align with the
+  latest vllm-ascend NPUModelRunner
 
 ## Maintenance Guidelines
 

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,4 +1,6 @@
 <!-- markdownlint-disable -->
+**Before submitting:** run `/precheck-pr` in Claude Code for a self-check against project conventions — catches dead code, missing benchmarks, and title format issues.
+
 PLEASE FILL IN THE PR DESCRIPTION HERE ENSURING ALL CHECKLIST ITEMS (AT THE BOTTOM) HAVE BEEN CONSIDERED.
 
 ## Purpose
@@ -18,7 +20,5 @@ PLEASE FILL IN THE PR DESCRIPTION HERE ENSURING ALL CHECKLIST ITEMS (AT THE BOTT
 - [ ] (Optional) Release notes update. If your change is user-facing, please update the release notes draft.
 </details>
 
-**BEFORE SUBMITTING:**
-- Run `/precheck-pr` in Claude Code for a self-check against project conventions — catches dead code, missing benchmarks, and title format issues.
-- Please read <https://github.com/vllm-project/vllm-omni/blob/main/CONTRIBUTING.md>
+**BEFORE SUBMITTING,** please read <https://github.com/vllm-project/vllm-omni/blob/main/CONTRIBUTING.md>
 (anything written below this line will be removed by GitHub Actions)