[Feature]: Show Z.ai GLM Coding Plan quota in the status bar

[ArtemBozhenko]

Problem or use case

Orca tracks usage for Claude, Codex, Gemini, OpenCode Go, Kimi, MiniMax, Antigravity and Grok, but not for Z.ai's GLM Coding Plan. Plenty of people run GLM through Claude Code (ANTHROPIC_BASE_URL=https://api.z.ai/api/anthropic) or OpenCode; that traffic burns a plan quota with a 5-hour and a weekly window, and today the only way to see how close you are is the Z.ai web console. Since the provider list in the status bar is compiled in, there is no setting or plugin that can add it.

Proposed solution

Add Z.ai as a usage provider, following the OpenCode Go shape:

• Settings → AI Provider Accounts → Z.ai: an API key field, stored as a protected secret.
• A fetcher against GET https://api.z.ai/api/monitor/usage/quota/limit (the endpoint takes the raw key in Authorization — a Bearer prefix is rejected), mapping the returned windows to the 5-hour session and weekly buckets, plus the plan tier (lite / pro / max) as planType.
• A default-on zai status-bar item with the usual visibility-menu toggle and appearance search entry.

Alternatives considered

Reading the quota from a local file the way Kimi/Grok do — Z.ai keeps no local usage state, so an API read is the only source.

Additional context

Related: #8476 (GLM model support), #10564 (ZCode as a first-class agent), #7569 (custom provider quota visibility). This issue is narrower: usage only, for a plan people already use through the existing agents.

I have a working implementation and will open a PR against this issue.

[nwparker]

Related: #22464 adds the ZCode agent harness (status, questions, notifications, send-to-agent, orchestration, resume). It does not include the quota work this issue asks for — that's a deliberate follow-up.

Installable builds if you want to try the harness now: https://github.com/stablyai/orca-adhoc/releases/tag/v1.4.210-adhoc.20260923230858 (test checklist on the PR).

Worth updating this thread on, though: now that Z.ai has open-sourced zai-org/ZCode, ZCode turns out to record usage locally in ~/.zcode/cli/db/db.sqlite — a model_usage table with started_at, provider_id, model_id, and input/output/reasoning/cache token columns, indexed on (started_at, provider_id, model_id). I confirmed 93 real rows on a machine with ZCode installed.

That makes a local usage provider possible — same shape as the Muse Code local provider — with no API key, no Authorization header, and no console scraping. It works offline and needs nothing from the user.

The tradeoff versus your proposal here: local records give consumption, not remaining quota. If surfacing remaining quota is the point, that still needs the endpoint you identified, and your detail about the key going in Authorization without a Bearer prefix is the useful part to keep. Possibly both: local for the usage breakdown, endpoint for the quota meter.

cc @ArtemBozhenko @aspectrr @damarro3 @lucianweber

[nwparker]

Please try the build and comment on #22464

Direct test instructions: #22464 (comment)

Build: https://github.com/stablyai/orca-adhoc/releases/tag/v1.4.210-adhoc.20260923230858 — orca-macos-arm64.dmg, orca-macos-x64.dmg, or orca-windows-setup.exe (unsigned on Windows; SmartScreen → More info → Run anyway).

To be clear about scope: this PR is the ZCode agent harness — status, questions, approvals, notifications, send-to-agent, resume. The quota meter this issue asks for is a follow-up, not in the build.

Please comment on #22464 with your results — working or broken, both help. Include your OS and zcode --version. Once a few people confirm it works on real machines, it gets approved and merged.

@ArtemBozhenko @aspectrr @damarro3 @lucianweber