docs(issues): prefix 1525-08 spec with issue number

Author: josecelano

docs/issues/1525-overhaul-persistence.md

@@ -130,7 +130,7 @@ You can then browse or search it while working in the main repository.
 
 ### 8) Add PostgreSQL driver support
 
-- Spec file: `docs/issues/1525-08-add-postgresql-driver.md`
+- Spec file: `docs/issues/1723-1525-08-add-postgresql-driver.md`
 - Outcome: PostgreSQL support lands on top of the refactored and migration-backed persistence
   layer; PostgreSQL is added to the compatibility matrix (subissue 1) and qBittorrent E2E
   (subissue 2) test harnesses

docs/issues/1721-1525-07-align-rust-and-db-types.md

@@ -243,7 +243,7 @@ These tests extend the existing driver `#[cfg(test)]` modules.
 - EPIC: `#1525`
 - Subissue `1525-06`: `docs/issues/1719-1525-06-introduce-schema-migrations.md` — must be completed
   first (provides the migration framework)
-- Subissue `1525-08`: `docs/issues/1525-08-add-postgresql-driver.md` — adds PostgreSQL
+- Subissue `1525-08`: `docs/issues/1723-1525-08-add-postgresql-driver.md` — adds PostgreSQL
   migration files including the history-aligned no-op for this migration
 - Subissue `1525-03`: `docs/issues/1525-03-persistence-benchmarking.md` — benchmark baseline
 - Reference implementation branch: `josecelano:pr-1684-review` — see EPIC for checkout