fix(plugins): use path keys for bundled platform plugins

[felix-windsor]

Summary

• scan bundled plugins/platforms/* with the same path-derived key shape used by the general plugin scanner
• make bundled platform plugins register as platforms/<name> instead of bare manifest names like teams-platform
• add a regression test covering the Teams platform plugin key

Why

hermes plugins list and the docs surface sub-category plugins by path key, for example platforms/teams. Runtime discovery scanned the bundled plugins/platforms directory as a separate root, so PluginManager recorded the same plugin as teams-platform. That made runtime state diverge from the key users see in plugin management surfaces.

Open PR overlap checked

• fix(nix): load google_chat platform under Nix #27077 fixes Nix packaged platform discovery in gateway/config.py; this PR does not touch gateway config or HERMES_BUNDLED_PLUGINS.
• feat(gateway): fire agent_loop_stopped plugin hook on interrupt #27208 adds a plugin hook in hermes_cli/plugins.py; it touches VALID_HOOKS, not the bundled platform scanner.

Verification

• ./scripts/run_tests.sh tests/hermes_cli/test_plugin_scanner_recursion.py::TestBundledBackendAutoLoad::test_bundled_platform_plugins_use_path_derived_keys tests/hermes_cli/test_plugin_scanner_recursion.py::TestBundledBackendAutoLoad::test_bundled_image_gen_openai_autoloads tests/gateway/test_plugin_platform_interface.py
• ./scripts/run_tests.sh tests/hermes_cli/test_plugin_scanner_recursion.py
• .venv/bin/ruff check hermes_cli/plugins.py tests/hermes_cli/test_plugin_scanner_recursion.py
• git diff --check

[felix-windsor]

Rebased on latest main and force-pushed the branch.

Local verification:

• ./scripts/run_tests.sh tests/hermes_cli/test_plugin_scanner_recursion.py::TestBundledBackendAutoLoad::test_bundled_platform_plugins_use_path_derived_keys tests/hermes_cli/test_plugin_scanner_recursion.py::TestBundledBackendAutoLoad::test_bundled_image_gen_openai_autoloads tests/gateway/test_plugin_platform_interface.py

Marked ready for review.

[felix-windsor]

Rebased on latest main (as of 2026-05-18) and force-pushed.

Local verification:

• ./scripts/run_tests.sh tests/hermes_cli/test_plugin_scanner_recursion.py::TestBundledBackendAutoLoad::test_bundled_platform_plugins_use_path_derived_keys

(Still seeing no CI statuses reported on the PR head; may need maintainer Actions approval for fork PRs.)

[teknium1]

Thanks for the focused fix. The premise remains valid on current main: runtime discovery scans plugins/platforms as a separate root at hermes_cli/plugins.py:1341, and _parse_manifest() uses the manifest name when its prefix is empty at hermes_cli/plugins.py:1579. Since plugins/platforms/teams/plugin.yaml:1 declares name: teams-platform, runtime records a different key from the CLI scanner, which builds nested path keys at hermes_cli/plugins_cmd.py:1013 and hermes_cli/plugins_cmd.py:978.

The proposed prefix-aware scan fixes the entire bundled-platform category rather than only Teams, while the regression test verifies the representative mismatch. The test is a behavioral contract between runtime discovery and the established path-key model, not a catalog snapshot. GitHub currently reports the PR mergeable.

This is an automated hermes-sweeper review.

[teknium1]

Thanks @felix-windsor — this fix landed on main as a slim redo in #118854 (405975a), which credits this PR and closes #27548. Closing as superseded.