feat(core,fuse): queued ops name their node and folder by local id

Schema 39 adds pending_op.lid and parent_lid, backfilled from nodes. Every
op queued or retargeted gets both, and a create gets its row before it
is queued. The claim reads a parent's uid through parent_lid, and a
landing folder rewrites the ops made inside it by local id instead of by
its placeholder string. Ops queued against a row Drive listed follow it
when it is merged into the landing one.

docs/CHANGELOG.md

@@ -11,8 +11,9 @@ scratch (user data in `staging/` and `recovery/` is never touched by this).
 
 ## [Unreleased]
 
-Schema: **38**. The queue table is rebuilt so an id is never given out twice; queued changes
-are kept. Queued changes get a column for the reason Drive refused them.
+Schema: **39**. The queue table is rebuilt so an id is never given out twice; queued changes
+are kept. Queued changes get a column for the reason Drive refused them, and name their file
+and folder by local id as well as by Drive's id.
 
 ### Added
 - **Sync issues.** A change Drive refuses because the storage is full, access was taken away,

docs/MILESTONE-3.0.0-STATUS.md

@@ -30,6 +30,11 @@ Tracks `docs/MILESTONE-3.0.0.md`. Update it with every commit that moves a phase
          cut.
 2. **Planner and executor (§5.4, §5.5)**: ops keyed by local id; remove `mint_local_uid`,
    `finish_create` and `adopt_real_uid`; a landing create sets `remote_uid` on its row.
+   - [x] Queued ops carry `lid` and `parent_lid` (schema 39). The claim reads the parent's uid
+         through `parent_lid`, and a landing folder rewrites the ops inside it by local id.
+   - [ ] The tree links by lid (`nodes.parent_lid`).
+   - [ ] No more placeholders: `nodes.uid` is `NULL` until a node lands.
+   - [ ] An executor that runs ops in dependency order, many at once.
 3. **Speed (§7)**: run independent ops in parallel, batch trashes and moves; measure 1,000 files
    and 100 folders on Wi-Fi against LAN (target: within 10 %).
    - [x] The measurement: `a_thousand_files_drain_as_fast_on_wifi_as_on_lan` in `sim/daemon.rs`,