Unified tool call display schema, compaction timeline, and auth fixes

- Replace extractPrincipalParam, parseToolCallDisplay, getToolKindFromName
  with a single unified parseToolCallDisplay on the server, consumed by
  both server (activity-curator) and app
- Parse tool calls exactly once and pass ToolCallDisplayInfo down to all
  consumers (message, sheet, details, stream view)
- Add compaction timeline item: detect SDKStatusMessage (compacting) and
  SDKCompactBoundaryMessage, show loading/completed marker in timeline
- Suppress compact summary user message in live stream (flag) and JSONL
  resume (isCompactSummary check)
- Add CompactionMarker component with scissors icon and token count
- Hide sub-agent tool calls from timeline, collapse into Task metadata
- Add Bot icon for Task tool calls
- Fix stripShellWrapperPrefix to strip /bin/zsh -lc wrappers without cd
- Replace CLAUDE_SESSION_TOKEN with CLAUDE_CODE_OAUTH_TOKEN

packages/server/src/shared/messages.ts

@@ -170,6 +170,7 @@ export const AgentTimelineItemPayloadSchema: z.ZodType<AgentTimelineItem> =
       input: z.unknown().optional(),
       output: z.unknown().optional(),
       error: z.unknown().optional(),
+      metadata: z.record(z.unknown()).optional(),
     }),
     z.object({
       type: z.literal("todo"),
@@ -184,6 +185,12 @@ export const AgentTimelineItemPayloadSchema: z.ZodType<AgentTimelineItem> =
       type: z.literal("error"),
       message: z.string(),
     }),
+    z.object({
+      type: z.literal("compaction"),
+      status: z.enum(["loading", "completed"]),
+      trigger: z.enum(["auto", "manual"]).optional(),
+      preTokens: z.number().optional(),
+    }),
   ]);
 
 export const AgentStreamEventPayloadSchema = z.discriminatedUnion("type", [