feat(parser): migrate vibe provider

Vibe stores transcript content in messages.jsonl while canonical session identity, title, timestamps, model, and usage can live in a sibling meta.json. Moving it behind a concrete provider keeps that companion relationship explicit at the provider boundary.\n\nThe provider preserves recursive session discovery, symlinked session directories, raw and full ID lookup through meta.json, meta-sidecar changed-path classification, effective size and mtime freshness, transcript hashing, fallback-ID exclusion, and parser output normalization through the existing Vibe parser wrapper.

Author: mariusvniekerk

internal/parser/provider.go

@@ -368,6 +368,8 @@ func providerFactoryForDef(def AgentDef) ProviderFactory {
 		return newQwenProviderFactory(def)
 	case AgentQwenPaw:
 		return newQwenPawProviderFactory(def)
+	case AgentVibe:
+		return newVibeProviderFactory(def)
 	case AgentWorkBuddy:
 		return newWorkBuddyProviderFactory(def)
 	case AgentZencoder: