feat: match fleet to blueprint targets exactly

Add an optional exact blueprint mode with keep/create/remove previews, atomic queueing, cancellation of unstarted excess creations, and persistent dependencies for safe port reuse. Track removals alongside creations and preserve fill mode as the default.

Validation: type check, production build, and 103 deployment tests passed. The full suite has one telemetry assertion failure also reproduced on the previous commit.

Fixes #42

src/lib/server/fleet/deployments.ts

@@ -27,7 +27,9 @@ export function getDeployment(id: string) {
     if (!deployment) return null;
     const events = db().prepare('SELECT id, created_at, message FROM server_deployment_events WHERE deployment_id = ? ORDER BY id').all(id);
     const launch = recipeForDeployment(id);
-    const collection = db().prepare(`SELECT c.id, c.name FROM server_collection_members m
+    const collection = db().prepare(`SELECT c.id, c.name FROM (
+        SELECT collection_id, deployment_id FROM server_collection_members
+        UNION ALL SELECT collection_id, deployment_id FROM server_collection_removals) m
         JOIN server_launch_collections c ON c.id = m.collection_id WHERE m.deployment_id = ?`).get(id) ?? null;
     return { deployment, events, recipe: launch ? summarizeRecipe(launch.recipe) : null, blueprintName: launch?.blueprintName ?? null,
         canResumeVerification: canResumeVerification(id), canResumeCleanup: canResumeCleanup(id), canCancelRemoval: canCancelRemoval(id), collection };