feat(backup): add MinIO snapshot backups via CLI and scheduler

src/config/schema.ts

@@ -672,6 +672,22 @@ const sessionsSchema = z.object({
   ttl: z.string().default('30d'),
 }).default({});
 
+const backupSchema = z.object({
+  enabled: z.boolean().default(false),
+  interval: z.string().default('24h'),
+  local_dir: z.string().default('~/.local/share/flynn/backups'),
+  include_vectors: z.boolean().default(true),
+  minio: z.object({
+    enabled: z.boolean().default(false),
+    endpoint: z.string().optional(),
+    access_key: z.string().optional(),
+    secret_key: z.string().optional(),
+    bucket: z.string().optional(),
+    prefix: z.string().default('flynn'),
+    secure: z.boolean().default(true),
+  }).default({}),
+}).default({});
+
 const historyIndexSchema = z.object({
   enabled: z.boolean().default(false),
   max_keywords: z.number().min(1).max(20).default(8),
@@ -736,6 +752,7 @@ export const configSchema = z.object({
   routing_policy: routingPolicySchema,
   history_index: historyIndexSchema,
   sessions: sessionsSchema,
+  backup: backupSchema,
   pairing: pairingSchema,
 });
 
@@ -777,6 +794,7 @@ export type RoutingPolicyConfig = z.infer<typeof routingPolicySchema>;
 export type HistoryIndexConfig = z.infer<typeof historyIndexSchema>;
 export type ServerConfig = z.infer<typeof serverSchema>;
 export type SessionsConfig = z.infer<typeof sessionsSchema>;
+export type BackupConfig = z.infer<typeof backupSchema>;
 export type ThinkingConfig = z.infer<typeof thinkingSchema>;
 export type HeartbeatConfig = z.infer<typeof heartbeatSchema>;
 export type HeartbeatCheck = z.infer<typeof heartbeatCheckSchema>;