treewide: move migration logic into pinakes-migrations crate

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: I98b8ed2eee464ecfd42f492dec49adeb6a6a6964

migrations/sqlite/V15__managed_storage.sql

@@ -1,33 +0,0 @@
--- V15: Managed File Storage
--- Adds server-side content-addressable storage for uploaded files
--- Add storage mode to media_items (external = file on disk, managed = in content-addressable storage)
-ALTER TABLE media_items
-ADD COLUMN storage_mode TEXT NOT NULL DEFAULT 'external';
-
--- Original filename for managed uploads (preserved separately from file_name which may be normalized)
-ALTER TABLE media_items
-ADD COLUMN original_filename TEXT;
-
--- When the file was uploaded to managed storage
-ALTER TABLE media_items
-ADD COLUMN uploaded_at TEXT;
-
--- Storage key for looking up the blob (usually same as content_hash for deduplication)
-ALTER TABLE media_items
-ADD COLUMN storage_key TEXT;
-
--- Managed blobs table - tracks deduplicated file storage
-CREATE TABLE managed_blobs (
-  content_hash TEXT PRIMARY KEY NOT NULL,
-  file_size INTEGER NOT NULL,
-  mime_type TEXT NOT NULL,
-  reference_count INTEGER NOT NULL DEFAULT 1,
-  stored_at TEXT NOT NULL,
-  last_verified TEXT
-);
-
--- Index for finding managed media items
-CREATE INDEX idx_media_storage_mode ON media_items (storage_mode);
-
--- Index for finding orphaned blobs (reference_count = 0)
-CREATE INDEX idx_blobs_reference_count ON managed_blobs (reference_count);