chore: retire remaining convex infrastructure

- move self-hosted Convex infra and root placeholder into recycle

- update architecture docs to remove active infra/convex deployment guidance

- extend local-first Convex guard to block retired infra regressions

REASONIX.md

@@ -27,7 +27,7 @@
 | `rust/crates/mnote-cli/` | CLI tool (`sidebar dataset`, `page get/create/title/save/move`, `block insert/patch`) |
 | `rust/crates/storage-convex-bridge/` | Convex compat / cloud source / sync-replica bridge for Rust |
 | `recycle/20260522-convex-runtime-retirement/convex/` | Retired root Convex functions source retained for audit / migration reference |
-| `infra/convex/` | Docker Compose for self-hosted Convex backend, used only for explicit cloud/compat/sync-replica paths |
+| `recycle/20260522-convex-runtime-retirement/infra/convex/` | Retired self-hosted Convex backend compose kept only for historical cloud/compat/sync-replica reference |
 | `infra/onlyoffice/` | Docker Compose for OnlyOffice |
 | `scripts/` | Node.js dev/build scripts + Playwright smoke tests |
 | `design/` | Architecture design documents organized by domain |
@@ -64,7 +64,7 @@
 - **Local-first default**: start from Rust `mnote-web`, LocalFS/local_folder projection, Page Aggregate, File Tree, Resource Tree, and SQLite control-plane auth/session/actor. Use Convex paths only for explicit cloud source, compat, sync-replica, migration, or rollback work.
 - **Smoke test pattern**: standalone Playwright scripts under `scripts/task-*.js` using a shared harness (`ensureAuthenticated`, `createTempDocument`, `cleanupDocuments`). All use `"use strict"` and `require("playwright")` (`scripts/task110-page-title-single-truth-smoke.js:1-4`).
 - **Rust workspace**: edition 2021, resolver "2", MIT license. All crates inherit workspace version (`rust/Cargo.toml:2-8`).
-- **Convex boundary**: root `convex/` has been retired to `recycle/20260522-convex-runtime-retirement/convex/`; do not recreate it as an active deploy source without a new architecture decision. `recycle/wolai-frontend/convex` is also historical. Keep Rust `transport/convex.rs` and `storage-convex-bridge` as explicit cloud/compat boundaries; do not mechanically delete them with the retired functions source.
+- **Convex boundary**: root `convex/` has been retired to `recycle/20260522-convex-runtime-retirement/convex/`; `infra/convex/` has been retired to `recycle/20260522-convex-runtime-retirement/infra/convex/`; do not recreate either as an active deploy source without a new architecture decision. `recycle/wolai-frontend/convex` is also historical. Keep Rust `transport/convex.rs` and `storage-convex-bridge` as explicit cloud/compat boundaries; do not mechanically delete them with the retired functions source.
 - **AI editing path**: local-first Markdown editing should prefer `currentFile + selection + allowedRoots / aiAccessScope + agent native patch/diff + watcher sync`. `mnote.doc.*` / `mnote.block.*` are cloud, remote, compat, or complex-structure helpers.
 - **Bug tracking**: bugs organized by design domain directory (e.g. `bugs/04-tree-domain/process/`), moved to `done/` when fixed (`bugs/README.md`).
 - **Design docs**: organized by domain in `design/`, with `process/` (in-progress) and `done/` (completed) subdirs (`design/README.md`).