feat: SQLite database for all credentials, keys, wake schedule, and usage cache

- Add SQLite database at ~/.local/share/dispatch/dispatch.db with tables: credentials, api_keys, wake_schedule, usage_cache
- Store Claude OAuth credentials in DB with import button in Model Status UI
- Store OpenCode/Copilot API keys in DB with paste-to-import modal
- Store OpenCode cookie and workspace IDs in DB
- Migrate wake schedule from .wake-schedule.json to DB
- Migrate usage cache from in-memory Map + localStorage to DB
- Remove all env var and file fallbacks — DB is the single source of truth
- Add seed scripts: bin/import-credentials.ts, bin/seed-opencode-keys.ts
- Docker: container runs as host UID/GID with matching home directory
- Clean up dispatch.toml: remove env fields, update comments
- Progress bar time markers for usage cycle tracking

1 files changed, 2 insertions, 6 deletions

diff --git a/packages/core/src/config/schema.ts b/packages/core/src/config/schema.ts
index 57d0b7b..83e2695 100644
--- a/packages/core/src/config/schema.ts
+++ b/packages/core/src/config/schema.ts
@@ -149,16 +149,12 @@ function validateKey(raw: unknown, path: string, errors: ConfigError[]): KeyDefi
 		};
 	}
 
-	// Other providers require env
-	if (typeof raw["env"] !== "string") {
-		errors.push({ path: `${path}.env`, message: "must be a string" });
-		return null;
-	}
+	// Other providers: env is optional (keys can be stored in DB)
 	return {
 		id: raw["id"] as string,
 		provider: raw["provider"] as string,
-		env: raw["env"] as string,
 		base_url: raw["base_url"] as string,
+		...(typeof raw["env"] === "string" ? { env: raw["env"] } : {}),
 	};
 }