refactor: move channel model restriction from handler to scheduling phase

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Move the model pricing restriction check from 8 handler entry points
to the account scheduling phase (SelectAccountForModelWithExclusions /
SelectAccountWithLoadAwareness), aligning restriction with billing:

- requested: check original request model against pricing list
- channel_mapped: check channel-mapped model against pricing list
- upstream: per-account check using account-mapped model

Handler layer now only resolves channel mapping (no restriction).
Scheduling layer performs pre-check for requested/channel_mapped,
and per-account filtering for upstream billing source.

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This commit is contained in:

erio

2026-04-02 13:24:30 +08:00

parent 3de7713017

commit 2dce4306b4

6 changed files with 793 additions and 475 deletions

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backend/internal/service/gateway_service.go

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