feat(quick-dev): generate spec trace file for one-shot route

One-shot changes now leave a lightweight spec file with frontmatter,
intent summary, and suggested review order — eliminating numbering
gaps when quick-dev is used as the primary dev loop.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/bmm-skills/4-implementation/bmad-quick-dev/step-01-clarify-and-route.md

@@ -1,7 +1,7 @@
 ---
 wipFile: '{implementation_artifacts}/spec-wip.md'
 deferred_work_file: '{implementation_artifacts}/deferred-work.md'
-spec_file: '' # set at runtime for plan-code-review before leaving this step
+spec_file: '' # set at runtime for both routes before leaving this step
 ---
 
 # Step 1: Clarify and Route
@@ -53,6 +53,8 @@ Never ask extra questions if you already understand what the user intends.
 5. Route — choose exactly one:
 
    **a) One-shot** — zero blast radius: no plausible path by which this change causes unintended consequences elsewhere. Clear intent, no architectural decisions.
+   1. Derive a valid kebab-case slug from the clarified intent. If the intent references a tracking identifier (story number, issue number, ticket ID), lead the slug with it (e.g. `3-2-digest-delivery`, `gh-47-fix-auth`). If `{implementation_artifacts}/spec-{slug}.md` already exists, append `-2`, `-3`, etc. Set `spec_file` = `{implementation_artifacts}/spec-{slug}.md`.
+
    **EARLY EXIT** → `./step-oneshot.md`
 
    **b) Plan-code-review** — everything else. When uncertain whether blast radius is truly zero, choose this path.

src/bmm-skills/4-implementation/bmad-quick-dev/step-oneshot.md

@@ -1,5 +1,6 @@
 ---
 deferred_work_file: '{implementation_artifacts}/deferred-work.md'
+spec_file: '' # set by step-01 before entering this step
 ---
 
 # Step One-Shot: Implement, Review, Present
@@ -29,19 +30,55 @@ Deduplicate all review findings. Three categories only:
 
 If a finding is caused by this change but too significant for a trivial patch, HALT and present it to the human for decision before proceeding.
 
+### Generate Spec Trace
+
+Write `{spec_file}` with the following content:
+
+1. **Frontmatter** — same schema as the full spec template, plus `route: 'one-shot'`:
+   ```yaml
+   ---
+   title: '{title derived from intent}'
+   type: '{feature | bugfix | refactor | chore}'
+   created: '{date}'
+   status: 'done'
+   route: 'one-shot'
+   ---
+   ```
+
+2. **Title and Intent** — the `# {title}` heading followed by an `## Intent` section with **Problem** and **Approach** lines (2–3 sentences total). This is the same summary you already generated for the terminal — reuse it.
+
+3. **Suggested Review Order** — append as a `## Suggested Review Order` section. Build using the same convention as step-05:
+   - Order stops by concern, not by file. Lead with the entry point.
+   - Every code reference is a clickable spec-file-relative link. Compute each link target as a relative path from `{spec_file}`'s directory to the changed file. Format: `[short-name:line](../../path/to/file.ts#L42)` with a `#L` line anchor. The relative path must be dynamically derived — never hardcode the depth.
+   - Each stop gets one ultra-concise line of framing (≤15 words).
+   - When there is only one concern, omit the bold label — just list the stops directly.
+
+   Format each stop as framing first, link on the next indented line:
+
+   ```markdown
+   ## Suggested Review Order
+
+   - {one-line framing}
+     [`file.ts:42`](../../src/path/to/file.ts#L42)
+   ```
+
+   > The `../../` prefix above is illustrative — compute the actual relative path from `{spec_file}`'s directory to each target file.
+
 ### Commit
 
 If version control is available and the tree is dirty, create a local commit with a conventional message derived from the intent. If VCS is unavailable, skip.
 
 ### Present
 
-1. Open all changed files in the user's editor so they can review the code directly:
-   - Resolve two sets of absolute paths: (1) the repository root (`git rev-parse --show-toplevel` — returns the worktree root when in a worktree, project root otherwise; if this fails, fall back to the current working directory), (2) each changed file. Run `code -r "{absolute-root}" <absolute-changed-file-paths>` — the root first so VS Code opens in the right context, then each changed file. Always double-quote paths to handle spaces and special characters.
-   - If `code` is not available (command fails), skip gracefully and list the file paths instead.
+1. Open the spec in the user's editor so they can click through the Suggested Review Order:
+   - Resolve two absolute paths: (1) the repository root (`git rev-parse --show-toplevel` — returns the worktree root when in a worktree, project root otherwise; if this fails, fall back to the current working directory), (2) `{spec_file}`. Run `code -r "{absolute-root}" "{absolute-spec-file}"` — the root first so VS Code opens in the right context, then the spec file. Always double-quote paths to handle spaces and special characters.
+   - If `code` is not available (command fails), skip gracefully and tell the user the spec file path instead.
 2. Display a summary in conversation output, including:
    - The commit hash (if one was created).
-   - List of files changed with one-line descriptions. Use CWD-relative paths with `:line` notation (e.g., `src/path/file.ts:42`) for terminal clickability. No leading `/`.
+   - List of files changed with one-line descriptions. Any file paths shown in conversation/terminal output must use CWD-relative format (no leading `/`) with `:line` notation (e.g., `src/path/file.ts:42`) for terminal clickability — this differs from spec-file links which use spec-file-relative paths.
    - Review findings breakdown: patches applied, items deferred, items rejected. If all findings were rejected, say so.
+   - A note that the spec is open in their editor (or the file path if it couldn't be opened). Mention that `{spec_file}` now contains a Suggested Review Order.
+   - **Navigation tip:** "Ctrl+click (Cmd+click on macOS) the links in the Suggested Review Order to jump to each stop."
 3. Offer to push and/or create a pull request.
 
 HALT and wait for human input.