feat: add HTTP transport test suite for agentic tools

Created test_http_agentic_tools.py - HTTP version of test_agentic_tools.py
with identical test cases and output format.

Features:
- Tests all 7 agentic tools via HTTP POST to /mcp endpoint
- Same queries as STDIO version for comparison
- Extracts structured_output and file_locations
- Saves logs to test_output_http/ directory
- Summary shows: pass/fail, structured output status, file count

Usage:
  Terminal 1: ./start_http_server.sh
  Terminal 2: python3 test_http_agentic_tools.py

Benefits:
- Test HTTP transport reliability vs STDIO
- Verify structured outputs work across both transports
- Compare performance and parsing between transports
- Easier debugging with HTTP logs and curl testing

Author: jruokola