docs: cut v6.2.1 changelog

Author: m0n0x41d

CHANGELOG.md

@@ -6,10 +6,16 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
 ## [Unreleased]
 
+## [6.2.1] — 2026-04-22
+
 ### Fixed
 
 - **`haft init --codex` no longer installs deprecated Codex prompts** — Codex initialization now migrates the bundled `h-*` entrypoints into Codex skills under `.agents/skills`, removes stale Haft prompts from `~/.codex/prompts` when Air is not also requested, and writes `agents/openai.yaml` so only `$h-reason` allows implicit invocation. The phase/action skills (`$h-frame`, `$h-char`, `$h-explore`, `$h-compare`, `$h-decide`, `$h-view`, `$h-verify`, `$h-status`, `$h-search`, `$h-note`, `$h-onboard`, `$h-problems`) are explicit-only. Air keeps its existing prompt bootstrap path.
 
+### Chore
+
+- **FPF corpus/index refresh** — bumped the embedded FPF corpus snapshot and regenerated `internal/cli/fpf.db`.
+
 ## [6.2.0] — 2026-04-20
 
 ### Fixed