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>

bin/mosaic-bootstrap-repo

@@ -90,10 +90,10 @@ bash scripts/agent/critical.sh
 bash scripts/agent/session-end.sh
 ```
 
-## Shared Rails
+## Shared Tools
 
 - Quality and orchestration guides: `~/.config/mosaic/guides/`
-- Shared automation rails: `~/.config/mosaic/rails/`
+- Shared automation tools: `~/.config/mosaic/tools/`
 
 ## Repo-Specific Notes
 
@@ -108,7 +108,7 @@ fi
 
 echo "[mosaic] Repo bootstrap complete: $TARGET_DIR"
 echo "[mosaic] Next: edit $TARGET_DIR/.mosaic/repo-hooks.sh with project workflows"
-echo "[mosaic] Optional: apply quality rails via ~/.config/mosaic/bin/mosaic-quality-apply --template <template> --target $TARGET_DIR"
+echo "[mosaic] Optional: apply quality tools via ~/.config/mosaic/bin/mosaic-quality-apply --template <template> --target $TARGET_DIR"
 echo "[mosaic] Optional: run orchestrator rail via ~/.config/mosaic/bin/mosaic-orchestrator-drain"
 echo "[mosaic] Optional: run detached orchestrator via bash $TARGET_DIR/scripts/agent/orchestrator-daemon.sh start"
 
@@ -119,8 +119,8 @@ if [[ -n "$QUALITY_TEMPLATE" ]]; then
       sed -i "s/^enabled:.*/enabled: true/" "$TARGET_DIR/.mosaic/quality-rails.yml"
       sed -i "s/^template:.*/template: \"$QUALITY_TEMPLATE\"/" "$TARGET_DIR/.mosaic/quality-rails.yml"
     fi
-    echo "[mosaic] Applied quality rails template: $QUALITY_TEMPLATE"
+    echo "[mosaic] Applied quality tools template: $QUALITY_TEMPLATE"
   else
-    echo "[mosaic] WARN: mosaic-quality-apply not found; skipping quality rails apply" >&2
+    echo "[mosaic] WARN: mosaic-quality-apply not found; skipping quality tools apply" >&2
   fi
 fi