fix: add file_path parameter to save_deliverable for large reports (#123)

* fix: add file_path parameter to save_deliverable for large reports

Large deliverable reports can exceed output token limits when passed as
inline content. This change allows agents to write reports to disk first
and pass a file_path instead.

Changes:
- Add file_path parameter to save_deliverable MCP tool with path
  traversal protection
- Pass CLAUDE_CODE_MAX_OUTPUT_TOKENS env var to SDK subprocesses
- Fix false positive error detection by extracting only text content
  (not tool_use JSON) when checking for API errors
- Update all prompts to instruct agents to use file_path for large
  reports and stop immediately after completion

* docs: simplify and condense CLAUDE.md

Reduce verbosity while preserving all essential information for AI
assistance. Makes the documentation more scannable and focused.

* feat: add issue number detection to pr command

The /pr command now automatically detects issue numbers from:
1. Explicit arguments (e.g., /pr 123 or /pr 123,456)
2. Branch name patterns (e.g., fix/123-bug, issue-456-feature)

Adds "Closes #X" lines to PR body to auto-close issues on merge.

* chore: remove CLAUDE_CODE_MAX_OUTPUT_TOKENS env var handling

No longer needed with the new Claude Agent SDK version.

* fix: restore max_output_tokens error handling

src/ai/claude-executor.ts

@@ -218,6 +218,16 @@ export async function runClaudePrompt(
   console.log(chalk.blue(`  Running Claude Code: ${description}...`));
 
   const mcpServers = buildMcpServers(sourceDir, agentName);
+
+  // Build env vars to pass to SDK subprocesses
+  const sdkEnv: Record<string, string> = {};
+  if (process.env.ANTHROPIC_API_KEY) {
+    sdkEnv.ANTHROPIC_API_KEY = process.env.ANTHROPIC_API_KEY;
+  }
+  if (process.env.CLAUDE_CODE_OAUTH_TOKEN) {
+    sdkEnv.CLAUDE_CODE_OAUTH_TOKEN = process.env.CLAUDE_CODE_OAUTH_TOKEN;
+  }
+
   const options = {
     model: 'claude-sonnet-4-5-20250929',
     maxTurns: 10_000,
@@ -225,6 +235,7 @@ export async function runClaudePrompt(
     permissionMode: 'bypassPermissions' as const,
     allowDangerouslySkipPermissions: true,
     mcpServers,
+    env: sdkEnv,
   };
 
   if (!execContext.useCleanOutput) {