Add progress tracking fields to shared types and session parser

Introduce ProgressSubtype union ("hook" | "bash" | "mcp" | "agent") and
three new fields on ParsedMessage: toolUseId, parentToolUseId, and
progressSubtype. These enable linking hook_progress events to the
tool_call that spawned them and classifying progress by source.

Session parser changes:
- Extract `id` from tool_use content blocks into toolUseId
- Extract `tool_use_id` from tool_result blocks into toolUseId (was
  previously misassigned to toolName)
- Read `parentToolUseID` from raw progress lines
- Derive progressSubtype from the `data.type` field using a new
  deriveProgressSubtype() helper
- Add `toolProgress` map to SessionDetailResponse for grouped progress

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

src/shared/types.ts

@@ -9,6 +9,8 @@ export type MessageCategory =
   | "file_snapshot"
   | "summary";
 
+export type ProgressSubtype = "hook" | "bash" | "mcp" | "agent";
+
 export interface ParsedMessage {
   uuid: string;
   category: MessageCategory;
@@ -17,6 +19,9 @@ export interface ParsedMessage {
   toolInput?: string;
   timestamp?: string;
   rawIndex: number;
+  toolUseId?: string;
+  parentToolUseId?: string;
+  progressSubtype?: ProgressSubtype;
 }
 
 export interface SessionEntry {
@@ -39,6 +44,7 @@ export interface SessionDetailResponse {
   id: string;
   project: string;
   messages: ParsedMessage[];
+  toolProgress?: Record<string, ParsedMessage[]>;
 }
 
 export interface ExportRequest {