chore: release v1.3.0

Carries the two new pruning executors and the POST /tasks fix, which has
been on main unreleased since the image only rebuilds on a version tag.

Also backfills the missing 1.2.0 changelog entry: that version was tagged
and shipped without one.

Co-Authored-By: Claude <noreply@anthropic.com>

CHANGELOG.md

@@ -6,12 +6,34 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
 
+## [1.3.0] - 2026-08-08
+
+### Added
+- **Postgres Retention Executor** (`postgres_retention_executor.py`) — deletes rows
+  past a retention window from a table on the shared Postgres server. Uses the
+  Scheduler's own credentials with only the database name overridden, so the target
+  database grants `scheduler_user` SELECT and DELETE on the table.
+- **Docker Prune Executor** (`docker_prune_executor.py`) — scheduled reclaim of Docker
+  disk usage. Build cache and dangling images are pruned by default; unused images and
+  volumes are opt-in, since volume pruning also removes volumes belonging to stopped
+  containers.
+
 ### Fixed
 - `POST /tasks` returned HTTP 500 after successfully creating the task. The response
   model declared `created_at`/`updated_at` as strings while the database returns
   timestamps, so every create looked like a failure and retrying hit a duplicate-key
   error.
 
+### Changed
+- `TASK_REGISTRATION.md` now lists the executors that exist. It previously advertised
+  `shell`, `python` and `docker` executors that were never implemented.
+
+## [1.2.0] - 2026-03-30
+
+### Added
+- **GCS Backup Executor** (`gcs_backup_executor.py`) — offsite backup to Google Cloud
+  Storage.
+
 ## [1.1.3] - 2026-01-08
 
 ### Changed

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "the-scheduler"
-version = "1.2.0"
+version = "1.3.0"
 description = "System-wide maintenance orchestration - backups, doc mirroring, cleanup, task automation"
 readme = "README.md"
 requires-python = ">=3.12"