feat: rename rails/ to tools/ and add service tool suites

Rename the `rails/` directory to `tools/` for agent discoverability —
agents frequently failed to locate helper scripts due to the non-intuitive
directory name. Add backward-compat symlink `rails/ → tools/`.

New tool suites:
- Authentik: auth-token, user-list, user-create, group-list, app-list,
  flow-list, admin-status (8 scripts)
- Coolify: team-list, project-list, service-list, service-status, deploy,
  env-set (7 scripts)
- Woodpecker: pipeline-list, pipeline-status, pipeline-trigger (3 stubs)
- GLPI: session-init, computer-list, ticket-list, ticket-create, user-list
  (6 scripts)
- Health: stack-health.sh — stack-wide connectivity check

Infrastructure:
- Shared credential loader at tools/_lib/credentials.sh
- install.sh creates symlink + chmod on tool scripts
- All ~253 rails/ path references updated across 68+ files

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

guides/BOOTSTRAP.md

@@ -19,7 +19,7 @@ This guide covers how to bootstrap a project so AI agents (Claude, Codex, etc.)
 
 ```bash
 # Automated bootstrap (recommended)
-~/.config/mosaic/rails/bootstrap/init-project.sh \
+~/.config/mosaic/tools/bootstrap/init-project.sh \
   --name "my-project" \
   --type "nestjs-nextjs" \
   --repo "https://git.mosaicstack.dev/owner/repo"
@@ -240,10 +240,10 @@ Documentation root hygiene (HARD RULE):
 
 ```bash
 # Use the init script
-~/.config/mosaic/rails/bootstrap/init-repo-labels.sh
+~/.config/mosaic/tools/bootstrap/init-repo-labels.sh
 
 # Or manually create standard labels
-~/.config/mosaic/rails/git/issue-create.sh  # (labels are created on first use)
+~/.config/mosaic/tools/git/issue-create.sh  # (labels are created on first use)
 ```
 
 ### Standard Labels
@@ -264,10 +264,10 @@ Create the first pre-MVP milestone at `0.0.1`.
 Reserve `0.1.0` for the MVP release milestone.
 
 ```bash
-~/.config/mosaic/rails/git/milestone-create.sh -t "0.0.1" -d "Pre-MVP - Foundation Sprint"
+~/.config/mosaic/tools/git/milestone-create.sh -t "0.0.1" -d "Pre-MVP - Foundation Sprint"
 
 # Create when MVP scope is complete and release-ready:
-~/.config/mosaic/rails/git/milestone-create.sh -t "0.1.0" -d "MVP - Minimum Viable Product"
+~/.config/mosaic/tools/git/milestone-create.sh -t "0.1.0" -d "MVP - Minimum Viable Product"
 ```
 
 ---
@@ -293,8 +293,8 @@ This enforces one merge strategy across human and agent workflows.
 ```bash
 # Copy Codex review pipeline
 mkdir -p .woodpecker/schemas
-cp ~/.config/mosaic/rails/codex/woodpecker/codex-review.yml .woodpecker/
-cp ~/.config/mosaic/rails/codex/schemas/*.json .woodpecker/schemas/
+cp ~/.config/mosaic/tools/codex/woodpecker/codex-review.yml .woodpecker/
+cp ~/.config/mosaic/tools/codex/schemas/*.json .woodpecker/schemas/
 
 # Add codex_api_key secret to Woodpecker CI dashboard
 ```
@@ -366,7 +366,7 @@ fi
 # (execute the command block under "Quality Gates")
 
 # Test Codex review (if configured)
-~/.config/mosaic/rails/codex/codex-code-review.sh --help
+~/.config/mosaic/tools/codex/codex-code-review.sh --help
 
 # Verify sequential-thinking MCP remains configured
 ~/.config/mosaic/bin/mosaic-ensure-sequential-thinking --check
@@ -434,7 +434,7 @@ fi
 Full project bootstrap with interactive and flag-based modes:
 
 ```bash
-~/.config/mosaic/rails/bootstrap/init-project.sh \
+~/.config/mosaic/tools/bootstrap/init-project.sh \
   --name "My Project" \
   --type "nestjs-nextjs" \
   --repo "https://git.mosaicstack.dev/owner/repo" \
@@ -447,7 +447,7 @@ Full project bootstrap with interactive and flag-based modes:
 Initialize standard labels and the first pre-MVP milestone:
 
 ```bash
-~/.config/mosaic/rails/bootstrap/init-repo-labels.sh
+~/.config/mosaic/tools/bootstrap/init-repo-labels.sh
 ```
 
 ---
@@ -483,4 +483,4 @@ After bootstrapping, verify:
 - [ ] `.env.example` exists (if project uses env vars)
 - [ ] CI/CD pipeline configured (if using Woodpecker/GitHub Actions)
 - [ ] Python publish path configured in CI (if project ships Python packages)
-- [ ] Codex review scripts accessible (`~/.config/mosaic/rails/codex/`)
+- [ ] Codex review scripts accessible (`~/.config/mosaic/tools/codex/`)