docs: add v0.32.0 changelog and info.go entries

Prepare for v0.32.0 release with:
- Removed bd mail commands (orchestration belongs elsewhere)
- Data model unchanged (type=message, Sender, etc.)
- Symlink fix (PR#665)
- Docs fix (GH#666)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

cmd/bd/info.go

@@ -287,6 +287,17 @@ type VersionChange struct {
 
 // versionChanges contains agent-actionable changes for recent versions
 var versionChanges = []VersionChange{
+	{
+		Version: "0.32.0",
+		Date:    "2025-12-20",
+		Changes: []string{
+			"REMOVED: bd mail commands (send, inbox, read, ack, reply) - Mail is orchestration, not data plane",
+			"NOTE: Data model unchanged - type=message, Sender, Ephemeral, replies_to fields remain",
+			"NOTE: Orchestration tools should implement mail UI on top of beads data model",
+			"FIX: Symlink preservation in atomicWriteFile (PR#665) - bd setup no longer clobbers nix/home-manager configs",
+			"FIX: Broken link to LABELS.md in examples (GH#666)",
+		},
+	},
 	{
 		Version: "0.31.0",
 		Date:    "2025-12-20",