Runtime half: convergent deploy + unified active lifecycle

Convergent deploy (prefix-based prune): castle deploy now removes orphaned
castle-* systemd units/timers no longer in the registry. Full deploy only;
partial (--name) deploys preserve siblings. Fixes the orphaned-timer / stale-
path drift class.

Container runner: derive --name from the service name (castle-<name>) instead
of the image name; skip the <PREFIX>_DATA_DIR env injection for containers
(avoids colliding with image env namespaces like NEO4J_*).

Unified active lifecycle (core/lifecycle.py): install/uninstall keep their
names but become activate/deactivate, dispatching by behavior — tool→PATH,
daemon/self-serving-frontend/job→systemd, static frontend→served. is_active
reports a uniform state (PATH-independent for tools). The CLI install/uninstall
and service enable/disable route through the extracted core.

API + dashboard: surface a uniform `active` state on programs alongside
`installed`; ProgramDetail shows active/inactive.

Tests: test_deploy_prune (6), test_lifecycle (5). 168 tests pass; lint clean.

app/src/pages/ProgramDetail.tsx

@@ -85,10 +85,12 @@ export function ProgramDetailPage() {
               <span>{runnerLabel(component.runner)}</span>
             </>
           )}
-          {component.installed !== null && (
+          {component.active !== null && (
             <>
-              <span className="text-[var(--muted)]">Installed</span>
-              <span>{component.installed ? "Yes" : "No"}</span>
+              <span className="text-[var(--muted)]">Active</span>
+              <span className={component.active ? "text-green-400" : "text-[var(--muted)]"}>
+                {component.active ? "● active" : "○ inactive"}
+              </span>
             </>
           )}
         </div>

app/src/types/index.ts

@@ -51,6 +51,7 @@ export interface ProgramSummary {
   commands: Record<string, string[][]> | null
   system_dependencies: string[]
   installed: boolean | null
+  active: boolean | null
   actions: string[]
   node: string | null
 }
@@ -83,6 +84,7 @@ export interface ComponentSummary {
   system_dependencies: string[]
   schedule: string | null
   installed: boolean | null
+  active: boolean | null
   node: string | null
 }