fix(worktrees): use full paths for bundled scripts

Users were confused by ./scripts/ references, thinking they needed to copy
scripts into their project. Scripts are in ~/.claude/skills/worktrees/scripts/
and should be referenced with full paths.

Changes:
- Updated spawn-issues to use full script paths
- Updated worktrees skill with full paths in all examples
- Fixed gitea model name to claude-haiku-4-5
- Added tools list to issue-worker agent

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

skills/spawn-issues/SKILL.md

@@ -61,7 +61,7 @@ git rev-parse --git-dir >/dev/null 2>&1 || exit 1
 For each issue, create worktree using script:
 ```bash
 cd "$REPO_PATH"
-worktree_path=$(./scripts/create-worktree.sh issue <ISSUE_NUMBER>)
+worktree_path=$(~/.claude/skills/worktrees/scripts/create-worktree.sh issue <ISSUE_NUMBER>)
 ```
 
 Track worktree paths:
@@ -174,7 +174,7 @@ branch_name = worker_result.branch
 **Create review worktree:**
 ```bash
 cd "$REPO_PATH"
-review_worktree=$(./scripts/create-worktree.sh review <PR_NUMBER> <BRANCH_NAME>)
+review_worktree=$(~/.claude/skills/worktrees/scripts/create-worktree.sh review <PR_NUMBER> <BRANCH_NAME>)
 ```
 
 **Spawn code-reviewer agent:**
@@ -230,7 +230,7 @@ After all issues reach terminal state:
 
 ```bash
 cd "$REPO_PATH"
-./scripts/cleanup-worktrees.sh "$WORKTREES_DIR"
+~/.claude/skills/worktrees/scripts/cleanup-worktrees.sh "$WORKTREES_DIR"
 ```
 
 This removes all issue and review worktrees created during this run.