`gateway/platforms/__init__.py` eagerly imported `QQAdapter` and
`YuanbaoAdapter` at package-init time, which transitively pulled in
qqbot's chunked-upload + keyboards + onboard machinery and yuanbao's
websocket stack. About 84 ms wall and 23 MB RSS on every fresh process
that touched anything under `gateway.platforms` — including `hermes
chat` (via run_agent → cli's plugin discovery transitive import).
Nothing in the codebase actually consumes these symbols from the
package root; every real call site uses the long-form path
(`from gateway.platforms.qqbot import QQAdapter`,
`from gateway.platforms.yuanbao import YuanbaoAdapter` in gateway/run.py).
The eager re-export was only there for convenience.
Replace with a PEP 562 module-level `__getattr__` that lazily imports
on first attribute access. Public API stays identical:
`from gateway.platforms import QQAdapter` keeps working but only
pays the import cost when the symbol is actually touched. `__dir__`
preserves help() / autocomplete behavior.
Measured impact (7-run medians, 9950X3D):
import gateway.platforms 127 → 43 ms (-66%)
50 → 27 MB (-46%)
import gateway.platforms.base 127 → 44 ms (-65%)
50 → 27 MB (-46%)
import cli (full chat path) 745 → 710 ms ( -5%)
96 → 90 MB ( -6%)
hermes chat -q (cold) -5 MB
The per-import win is biggest because qqbot/yuanbao deps don't overlap
with anything on the gateway-platforms path — full `import cli`
already loads aiohttp/websockets transitively from other places, so
the marginal CLI win is smaller than the isolated import benchmark.
The `gateway.platforms.base` win is what matters most for long-lived
gateway processes: every gateway boot saves 23 MB resident.
All 144 qqbot tests pass; broader gateway suite (5132 tests) passes
modulo 4 pre-existing flakes also failing on main without this change.
ea2d66ddc0