feat(dolt): bootstrap routes.jsonl and interactions.jsonl (bd-lbdy7)

Add support for importing routes.jsonl and interactions.jsonl during
Dolt bootstrap. Previously only issues.jsonl was imported.

Changes:
- Add routes and interactions tables to Dolt schema
- Import routes before issues (no dependencies)
- Import interactions after issues (may reference issue_id)
- Reuse audit.Entry type instead of duplicating
- Add tests for multi-file bootstrap

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

internal/storage/dolt/schema.go

@@ -203,6 +203,37 @@ CREATE TABLE IF NOT EXISTS repo_mtimes (
     last_checked DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
     INDEX idx_repo_mtimes_checked (last_checked)
 );
+
+-- Routes table (prefix-to-path routing configuration)
+CREATE TABLE IF NOT EXISTS routes (
+    prefix VARCHAR(32) PRIMARY KEY,
+    path VARCHAR(512) NOT NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+);
+
+-- Interactions table (agent audit log)
+CREATE TABLE IF NOT EXISTS interactions (
+    id VARCHAR(32) PRIMARY KEY,
+    kind VARCHAR(64) NOT NULL,
+    created_at DATETIME NOT NULL,
+    actor VARCHAR(255),
+    issue_id VARCHAR(255),
+    model VARCHAR(255),
+    prompt TEXT,
+    response TEXT,
+    error TEXT,
+    tool_name VARCHAR(255),
+    exit_code INT,
+    parent_id VARCHAR(32),
+    label VARCHAR(64),
+    reason TEXT,
+    extra JSON,
+    INDEX idx_interactions_kind (kind),
+    INDEX idx_interactions_created_at (created_at),
+    INDEX idx_interactions_issue_id (issue_id),
+    INDEX idx_interactions_parent_id (parent_id)
+);
 `
 
 // defaultConfig contains the default configuration values