fix(db): integrate delivery inbox into deletion and schema surfaces

Migration 0034 introduced workflow_agent_deliveries without wiring the
four integration surfaces that pin new tenant tables:

- schema.sql desired-state bootstrap lacked the
  workflow_agent_delivery_status enum the inline table definition uses,
  so desired-state apply failed with 'type does not exist'.
- EXPECTED_SCOPED_TABLES / PURGE_SCOPED_TABLES omitted the table, so the
  deletion catalog inventory failed closed on 'unknown' drift (by
  design) across the deletion suite; purge order puts the delivery
  inbox before its workflow_runs/workflows/events parents.
- The embedded-migrator count pin still said 33.
- The 0029/schema.sql fence-parity test did not account for 0034
  attaching the community write fence to the new table.

Also restore the doc comment on KIND_WORKFLOW_DEF: the wake-kind
constant was inserted between the comment and its item, leaving
KIND_WORKFLOW_DEF undocumented and failing clippy -D missing-docs.

Co-authored-by: Wakko <0999168a3b1a4dabdf398cf43ba2893bb29b74dc06d0b31c2d3b51dbebea1612@buzz.block.builderlab.xyz>
Signed-off-by: Logan Johnson <loganj@squareup.com>

crates/buzz-core/src/kind.rs

@@ -443,10 +443,10 @@ pub const KIND_THREAD_SUMMARY: u32 = 39005;
 /// clients must not infer `has_more` from row counts.
 pub const KIND_WINDOW_BOUNDS: u32 = 39006;
 
-/// Workflow definition (parameterized replaceable, d=workflow_uuid).
 /// Ephemeral, relay-authored hint that a durable workflow delivery is ready.
 pub const KIND_WORKFLOW_AGENT_WAKE: u32 = 24620;
 
+/// Workflow definition (parameterized replaceable, d=workflow_uuid).
 pub const KIND_WORKFLOW_DEF: u32 = 30620;
 
 /// NIP-DV: per-viewer DM visibility snapshot (relay-signed, parameterized

crates/buzz-db/src/deletion.rs

@@ -79,6 +79,7 @@ pub const EXPECTED_SCOPED_TABLES: &[&str] = &[
     "subscriptions",
     "thread_metadata",
     "users",
+    "workflow_agent_deliveries",
     "workflow_approvals",
     "workflow_runs",
     "workflows",
@@ -86,6 +87,7 @@ pub const EXPECTED_SCOPED_TABLES: &[&str] = &[
 
 /// Foreign-key-safe child-before-parent order for the PostgreSQL purge.
 pub const PURGE_SCOPED_TABLES: &[&str] = &[
+    "workflow_agent_deliveries",
     "workflow_approvals",
     "scheduled_workflow_fires",
     "workflow_runs",

crates/buzz-db/src/migration.rs

@@ -640,7 +640,7 @@ mod tests {
         let mut migrations: Vec<_> = MIGRATOR.iter().collect();
         migrations.sort_by_key(|migration| migration.version);
 
-        assert_eq!(migrations.len(), 33);
+        assert_eq!(migrations.len(), 34);
         assert_eq!(migrations[0].version, 1);
         assert_eq!(&*migrations[0].description, "initial schema");
         assert!(migrations[0]
@@ -1549,6 +1549,10 @@ mod tests {
         let mut expected_fences = migration.fence_attachments.clone();
         expected_fences.remove("product_feedback");
         expected_fences.remove("rate_limit_violations");
+        // Migration 0034 attaches the fence to the durable managed-agent
+        // delivery inbox after 0029; the desired-state schema carries it
+        // inline.
+        expected_fences.insert("workflow_agent_deliveries".to_owned());
         assert_eq!(
             expected_fences, schema.fence_attachments,
             "write-fence attachment targets differ after recovery policy"

schema/schema.sql

@@ -35,6 +35,7 @@ CREATE TYPE delivery_method AS ENUM ('webhook', 'websocket');
 CREATE TYPE subscription_status AS ENUM ('active', 'paused', 'deleted');
 CREATE TYPE pause_reason AS ENUM ('user', 'system', 'rate_limit');
 CREATE TYPE channel_add_policy AS ENUM ('anyone', 'owner_only', 'nobody');
+CREATE TYPE workflow_agent_delivery_status AS ENUM ('pending', 'claimed');
 
 -- ── Communities ───────────────────────────────────────────────────────────────
 -- Conformance: row zero (host binding). The host map. `resolve_host(host)`