Remove all restore/snapshot references from compaction

- Removed restore command from bd show output
- Updated compact help text (removed snapshot claim)
- Fixed COMPACTION.md (removed 'batch restore' from roadmap)
- All compaction UI now correctly states permanent decay

COMPACTION.md

@@ -447,5 +447,5 @@ Common enhancement requests:
 - Custom summarization prompts (bd-264)
 - Alternative LLM backends (local models)
 - Configurable eligibility rules
-- Batch restore operations
 - Compaction analytics dashboard
+- Optional snapshot retention for restore (if requested)

cmd/bd/compact.go

@@ -28,7 +28,7 @@ var compactCmd = &cobra.Command{
 	Long: `Compact old closed issues using semantic summarization.
 
 Compaction reduces database size by summarizing closed issues that are no longer
-actively referenced. Full restore capability is maintained via snapshots.
+actively referenced. This is permanent graceful decay - original content is discarded.
 
 Tiers:
   - Tier 1: Semantic compression (30 days closed, 70% reduction)

cmd/bd/main.go

@@ -1039,7 +1039,6 @@ var showCmd = &cobra.Command{
 				compactedDate = issue.CompactedAt.Format("2006-01-02")
 			}
 			fmt.Printf("%s Compacted: %s (%s)\n", tierEmoji, compactedDate, tierName)
-			fmt.Printf("💾 Restore: bd compact --restore %s\n", issue.ID)
 		}
 
 		if issue.Description != "" {