chore: remove vestigial zip/REST deploy artifacts (0.20.2)

Remove scripts/deploy.sh and .distignore which belonged to the retired
Code-Snippets REST deploy receiver (prautoblogger-deploy/v1/*). The live
pipeline is the shared rsync workflow in peptide-e2e; it uses hardcoded
--exclude flags and never reads .distignore.

Safety checks:
- No workflow in .github/workflows/ references scripts/deploy.sh
- peptide-e2e deploy-app.yml confirmed to NOT consume .distignore

Version bump: 0.20.1 -> 0.20.2 (patch; no functional change)

Agent-Session: cowork-deploy-skill-cleanup

CHANGELOG.md

@@ -5,6 +5,16 @@ All notable changes to PRAutoBlogger will be documented in this file.
 Format follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project uses [Semantic Versioning](https://semver.org/).
 
+## [0.20.2] - 2026-06-13
+
+### Removed
+- **`scripts/deploy.sh`** — belonged to the retired zip/REST deploy receiver flow
+  (`/wp-json/prautoblogger-deploy/v1/*`); the live pipeline is the shared rsync workflow
+  (`peptiderepo/peptide-e2e/.github/workflows/deploy-app.yml@main`).
+- **`.distignore`** — used by `scripts/deploy.sh` to build the production zip; no longer
+  consumed by any workflow (the shared rsync pipeline uses hardcoded `--exclude` flags).
+
+
 ## [0.20.1] - 2026-06-12
 
 ### Fixed
@@ -1220,4 +1230,4 @@ swap with no user-visible change in article quality.
 - AJAX-powered "Generate Now" and "Test Connections" buttons.
 - Custom database tables for source data, analysis results, generation logs, and content scores.
 - Clean uninstall handler removing all plugin data.
-- ARCHITECTURE.md and CONVENTIONS.md for AI-readable codebase documentation.
+- ARCHITECTURE.md and CONVENTIONS.md for AI-readable codebase documentation.