fix(beads-server): fix BeadBoard project ID + install bd binary

- Fixed project_id mismatch (was "beadboard", should be actual DB project ID)
- Rebuilt Docker image with bd v1.0.2 binary (node:20-slim for glibc compat)
- Ran bd migrate to update schema from 1.0.0 → 1.0.2 (adds started_at, etc.)
- Task creation and bd CLI now work inside the container

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

stacks/beads-server/main.tf

@@ -441,7 +441,7 @@ resource "kubernetes_config_map" "beadboard_config" {
       dolt_server_port  = 3306
       dolt_server_user  = "root"
       dolt_database     = "code"
-      project_id        = "beadboard"
+      project_id        = "a8f8bae7-ce65-4145-a5db-a13d11d297da"
     })
     "dolt-server.port" = "3306"
   }