feat: reconcile application vertical slices

Backfill the completed acquisitions, sales, dashboard, pricing, search, public detail, worker, migration, contracts, validation, tests, and implementation-status changes into one verified application slice.

database/migrations/0021_pricing_observation_mapping_context.sql

@@ -0,0 +1,2 @@
+ALTER TABLE "pricing_observations" ADD COLUMN "external_identifier" text;
+ALTER TABLE "pricing_observations" ADD COLUMN "search_query" text;

database/migrations/meta/_journal.json

@@ -141,6 +141,13 @@
       "when": 1790236800000,
       "tag": "0019_pricing_job_retries",
       "breakpoints": true
+    },
+    {
+      "idx": 20,
+      "version": "7",
+      "when": 1790323200000,
+      "tag": "0020_pricing_job_mapping_context",
+      "breakpoints": true
     }
   ]
-}
+}