Add /pr command for quick PR creation from current branch

Creates a lighter-weight PR creation flow for when you're already on a
branch with commits. Features:
- Auto-generates title from branch name or commits
- Auto-generates description summarizing changes
- Links to related issue if branch name contains issue number
- Triggers code-reviewer agent after PR creation

Closes #19

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

commands/pr.md

@@ -0,0 +1,147 @@
+---
+description: Create a PR from current branch. Auto-generates title and description from branch name and commits.
+---
+
+# Create Pull Request
+
+@~/.claude/skills/gitea/SKILL.md
+
+Quick PR creation from current branch - lighter than full `/work-issue` flow for when you're already on a branch with commits.
+
+## Prerequisites
+
+- Current branch is NOT main/master
+- Branch has commits ahead of main
+- Changes have been pushed to origin (or will be pushed)
+
+## Process
+
+### 1. Verify Branch State
+
+```bash
+# Check current branch
+git branch --show-current
+
+# Ensure we're not on main
+# If on main, abort with message: "Cannot create PR from main branch"
+
+# Check for commits ahead of main
+git log main..HEAD --oneline
+```
+
+### 2. Push if Needed
+
+```bash
+# Check if branch is tracking remote
+git status -sb
+
+# If not pushed or behind, push with upstream
+git push -u origin <branch-name>
+```
+
+### 3. Generate PR Title
+
+**Option A: Branch contains issue number** (e.g., `issue-42-add-feature`)
+
+Extract issue number and use format: `[Issue #<number>] <issue-title>`
+
+```bash
+tea issues <number>  # Get the actual issue title
+```
+
+**Option B: No issue number**
+
+Generate from branch name or recent commit messages:
+- Convert branch name from kebab-case to title case: `add-user-auth` -> `Add user auth`
+- Or use the most recent commit subject line
+
+### 4. Generate PR Description
+
+Analyze the diff and commits to generate a description:
+
+```bash
+# Get diff against main
+git diff main...HEAD --stat
+
+# Get commit messages
+git log main..HEAD --format="- %s"
+```
+
+Structure the description:
+
+```markdown
+## Summary
+[1-2 sentences describing the overall change]
+
+## Changes
+[Bullet points summarizing commits or key changes]
+
+[If issue linked: "Closes #<number>"]
+```
+
+### 5. Create PR
+
+Use tea CLI to create the PR:
+
+```bash
+tea pulls create --title "<generated-title>" --description "<generated-description>"
+```
+
+Capture the PR number from the output (e.g., "Pull Request #42 created").
+
+### 6. Auto-review
+
+Inform the user that auto-review is starting, then spawn the `code-reviewer` agent in background:
+
+```
+Task tool with:
+  - subagent_type: "code-reviewer"
+  - run_in_background: true
+  - prompt: |
+      Review PR #<PR_NUMBER> in the repository at <REPO_PATH>.
+
+      1. Checkout the PR: tea pulls checkout <PR_NUMBER>
+      2. Get the diff: git diff main...HEAD
+      3. Analyze for code quality, bugs, security, style, test coverage
+      4. Post structured review comment with tea comment
+      5. Merge with rebase if LGTM, otherwise leave for user
+```
+
+### 7. Display Result
+
+Show the user:
+- PR URL/number
+- Generated title and description
+- Status of auto-review (spawned in background)
+
+## Issue Linking
+
+To detect if branch is linked to an issue:
+
+1. Check branch name for patterns:
+   - `issue-<number>-*`
+   - `<number>-*`
+   - `*-#<number>`
+
+2. If issue number found:
+   - Fetch issue title from Gitea
+   - Use `[Issue #N] <issue-title>` format for PR title
+   - Add `Closes #N` to description
+
+## Example Output
+
+```
+Created PR #42: [Issue #15] Add /pr command
+
+## Summary
+Adds /pr command for quick PR creation from current branch.
+
+## Changes
+- Add commands/pr.md with auto-generation logic
+- Support issue linking from branch name
+
+Closes #15
+
+---
+Auto-review started in background. Check status with: tea pulls 42 --comments
+```