* feat(cli): filter usage by billing route and mode
Carry provider-observed billing provenance through Hermes and the session cache, register the real OpenRouter route, and add call-level route/billing filters to models, sessions, export, and audit.
Keep unknown billing unclassified, preserve existing pricing, and repair legacy included Hermes ledger baselines without rewriting genuine multi-observation history.
* feat(opencode): preserve OpenRouter route provenance
Carry OpenCode providerID through legacy SQLite, v2, file, and session-rollup paths so OpenRouter calls remain distinct from direct traffic. Invalidate OpenCode and KiloCode caches and cover strict route matching.
* feat(opencode): classify Amazon Bedrock route
Map OpenCode's exact amazon-bedrock providerID to the existing metered Bedrock route, including model families that cannot rely on Anthropic/OpenAI ID shapes. Invalidate OpenCode and KiloCode caches across the route expansion.
* docs(opencode): document billing route provenance
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Co-authored-by: ozymandiashh <234437643+ozymandiashh@users.noreply.github.com>
