chore: align sqlite control plane architecture

- replace default Convex control-plane wording with Rust SQLite control-plane across architecture, AGENTS, Reasonix, and design docs

- retire root Convex functions source and deploy script into recycle while keeping explicit cloud/compat/sync-replica boundaries

- add control-plane migration guard/docs and keep CodeGraph refreshed after the SQLite control-plane cutover

rust/crates/mnote-web/src/hermes_tools/mod.rs

@@ -195,7 +195,10 @@ pub struct CommandContextBridge {
 /// - 如果提供了 `bridge` 且 `workspace_readonly == true`，拒绝
 ///
 /// 拒绝响应可解释（包含具体原因），不静默成功，不 panic。
-pub fn ensure_write_authorized(context: &RequestContext, input: &ToolCallInput) -> Result<(), WebError> {
+pub fn ensure_write_authorized(
+    context: &RequestContext,
+    input: &ToolCallInput,
+) -> Result<(), WebError> {
     if !input.has_idempotency_key() {
         return Err(WebError::bad_request_code(
             "mnote_tool_idempotency_required",