`:nitro`, `:floor`, `:exacto`, and `:online` are request-time routing
modifiers, not catalog models — OpenRouter's /models lists only the base
id, and a variant runs the same model with the same context window.
`get_model_context_length()` keyed every lookup on the full suffixed id,
so each one missed and the resolver fell through to a generic family
default or the 256K fallback:
openai/gpt-5.5:nitro -> 256K (real 1.05M)
x-ai/grok-4.6:nitro -> 131K (generic "grok" catch-all)
anthropic/claude-opus-4.6:nitro-> 200K (generic "claude" catch-all)
The window silently shrank, triggering early compression and a wrong
/usage readout. f14059fa fixed the sibling half of this bug class in
/model validation; this fixes the metadata half.
Strip a recognized variant suffix for LOOKUP only, keeping the suffixed
id on the wire so the routing opt-in survives. Applied after the explicit
config overrides (steps 0b/0c) so a user-pinned value still wins, and
before every cache/catalog lookup. Gated on the request actually routing
through OpenRouter, so a local Ollama `model:tag` is untouched.
`:free`/`:batch`/`:thinking` are deliberately excluded — those ARE
distinct catalog SKUs with their own windows, so stripping them would
report the wrong number.
The suffix set and base-id split move to hermes_constants (import-safe,
dependency-free) so the metadata layer shares one definition with
hermes_cli.models instead of duplicating it.