Changeset 0.21.2 (#88)

server/database/migrations/sqlite/010_v0212_workspace_chunks.sql

@@ -0,0 +1,31 @@
+-- v0.21.2: Workspace indexing + semantic search (SQLite)
+
+-- workspace_files additions
+ALTER TABLE workspace_files ADD COLUMN index_status TEXT DEFAULT 'pending';
+ALTER TABLE workspace_files ADD COLUMN chunk_count INTEGER NOT NULL DEFAULT 0;
+
+CREATE INDEX IF NOT EXISTS idx_workspace_files_index_status
+    ON workspace_files(workspace_id, index_status);
+
+-- workspaces addition
+ALTER TABLE workspaces ADD COLUMN indexing_enabled INTEGER NOT NULL DEFAULT 1;
+
+-- workspace_chunks table
+-- Embeddings stored as JSON text for app-level cosine similarity.
+CREATE TABLE IF NOT EXISTS workspace_chunks (
+    id           TEXT PRIMARY KEY,
+    workspace_id TEXT NOT NULL REFERENCES workspaces(id) ON DELETE CASCADE,
+    file_id      TEXT NOT NULL REFERENCES workspace_files(id) ON DELETE CASCADE,
+    chunk_index  INTEGER NOT NULL,
+    content      TEXT NOT NULL,
+    token_count  INTEGER NOT NULL DEFAULT 0,
+    embedding    TEXT,              -- JSON array of floats
+    metadata     TEXT DEFAULT '{}', -- JSON object
+    created_at   TEXT DEFAULT (datetime('now'))
+);
+
+CREATE INDEX IF NOT EXISTS idx_workspace_chunks_file
+    ON workspace_chunks(file_id);
+
+CREATE INDEX IF NOT EXISTS idx_workspace_chunks_workspace
+    ON workspace_chunks(workspace_id);