feat(cli): add --json flag to flask routes command

[sahilmalhotra1987]

Summary

• Adds a --json flag to flask routes that outputs the route table as a JSON array instead of the text table
• Each entry has endpoint, methods (sorted list), and rule; subdomain apps also emit subdomain, host-matching apps emit host
• HEAD and OPTIONS are filtered unless --all-methods is also passed; empty apps produce []
• The --sort flag is honoured in JSON mode (match preserves natural iter_rules() order)
• Fully backwards-compatible — all existing flask routes invocations are unaffected

Test plan

• test_json_output — basic shape: keys endpoint, methods, rule present; methods is a list
• test_json_no_routes — empty app returns []
• test_json_excludes_head_options_by_default — HEAD/OPTIONS absent without --all-methods
• test_json_all_methods — HEAD/OPTIONS present with --all-methods
• test_json_with_subdomain — subdomain key present and correct value
• test_json_with_host_matching — host key present and correct value
• test_json_sort (parametrized) — endpoint and rule sort keys produce sorted output
• test_json_sort_match_preserves_iter_rules_order — --sort match preserves natural route order

🤖 Generated with Claude Code

[ThiefMaster]

🤖 Generated with Claude Code

No thanks. If we wanted AI-generated code, we could just use these tools ourselves.