ticket: use base32 project record ids

.yoi/tickets/00001KTAZ2402/resolution.md

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+Ticket local files backend is complete and merged.
+
+Implementation:
+
+- `740b017 feat: add local ticket backend`
+- merge commit: `1041cdb merge: add local ticket backend`
+
+Summary:
+
+- Added a new low-level `ticket` workspace crate.
+- Added typed Ticket domain types and `TicketBackend` trait.
+- Added `LocalTicketBackend` over the current `work-items/` storage.
+- Implemented list/show/create/add_event/review/set_status/close/doctor operations.
+- Preserved current local storage layout and `tickets.sh` compatibility.
+- Kept the implementation independent from `pod`, `tui`, Intake, Orchestrator routing, and scheduler code.
+- Did not rename `work-items/` or remove `tickets.sh`.
+
+Review:
+
+- External sibling reviewer approved with no blockers.
+- Non-blocker follow-ups recorded in the implementation report/review:
+  - event references are modeled but not persisted/parsed in `thread.md` yet;
+  - write paths should avoid emitting extension values that `tickets.sh doctor` rejects unless the format is intentionally extended;
+  - backend lock coordinates Rust callers but not direct concurrent `tickets.sh` writes;
+  - inherited `thread.md` `---` separator ambiguity remains.
+
+Post-merge validation passed:
+
+- `cargo test -p ticket`
+- `cargo fmt --check`
+- `git diff --check`
+- `./tickets.sh doctor`
+- `cargo check --workspace --all-targets`
+- `nix build .#yoi --no-link`