feat: implement browser extension for media publishing and add backend support for media management

server/migrations/20260402153000_repair_plugin_installations_schema.up.sql

@@ -0,0 +1,39 @@
+CREATE TABLE IF NOT EXISTS plugin_installations (
+    id                      BIGSERIAL PRIMARY KEY,
+    tenant_id               BIGINT NOT NULL REFERENCES tenants(id),
+    user_id                 BIGINT NOT NULL REFERENCES users(id),
+    installation_key        VARCHAR(128) NOT NULL,
+    installation_name       VARCHAR(255) NOT NULL,
+    browser_name            VARCHAR(64),
+    client_version          VARCHAR(32),
+    installation_token_hash VARCHAR(128) NOT NULL,
+    status                  VARCHAR(20) NOT NULL DEFAULT 'active',
+    last_seen_at            TIMESTAMPTZ,
+    created_at              TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at              TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    deleted_at              TIMESTAMPTZ
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS uk_plugin_installations_key_active
+    ON plugin_installations(tenant_id, installation_key)
+    WHERE deleted_at IS NULL;
+
+CREATE INDEX IF NOT EXISTS idx_plugin_installations_tenant_status
+    ON plugin_installations(tenant_id, status, created_at DESC);
+
+ALTER TABLE plugin_sessions
+    ADD COLUMN IF NOT EXISTS plugin_installation_id BIGINT;
+
+DO $$
+BEGIN
+    IF NOT EXISTS (
+        SELECT 1
+        FROM pg_constraint
+        WHERE conname = 'plugin_sessions_plugin_installation_id_fkey'
+    ) THEN
+        ALTER TABLE plugin_sessions
+            ADD CONSTRAINT plugin_sessions_plugin_installation_id_fkey
+            FOREIGN KEY (plugin_installation_id)
+            REFERENCES plugin_installations(id);
+    END IF;
+END $$;