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The eight providers are not equally first-class, and only docs/ceilings.md says so #577
Description
README.md calls all eight providers first-class. docs/ceilings.md records what each one actually reaches, and the spread is wide:
| Reading | Providers that have it |
|---|---|
| Full usage readout (tokens, context window, cost) | Claude Code, Codex |
| Cost only | oh-my-pi, opencode, Crush |
| Context only | Kiro CLI, whose spend is metered in credits |
| No transcript usage at all | Antigravity, Cursor CLI |
| Plan gauge | Claude Code, Codex |
| Session state, and with it the last turn, the turn ring, the interrupt reading and keep-awake | all but Crush and Cursor CLI |
| Hands-on time counted from a turn nobody touched | all but Crush and Cursor CLI |
| Palette search and recap over the conversation | all but Antigravity and Cursor CLI |
Hard invariant 5 says a session feature is designed against all eight and that a deliberate gap is written down in the same pull request. Every gap above is deliberate and every one of them is written down. The problem is where: docs/ceilings.md is a contributor document, so a user who picks Cursor CLI learns the shape of their install one absent feature at a time, and an empty pane never says whether the provider reported nothing or lich drew nothing.
What done looks like
- A support matrix in
README.mdbeside the provider list, written in what the user sees (what the footer carries, whether the Review tab has a last turn, whether the machine stays awake), never in lich's internals. - The word first-class either earned or spent. Two providers with no transcript reader are not the same product as Claude Code, and the README is where a stranger decides.
- Where a surface draws nothing because the provider reports nothing, it says so once.
FooterSessionalready renders nothing rather than a zero, which is right for a footer and less right for a Review tab whose switch simply never appears.
Open
- Does the matrix live only in
README.md, or also in Settings › Providers where the binary is chosen, so the trade-off is visible at the moment of choosing? - Antigravity and Cursor CLI file their conversations in SQLite lich has no reader for, and neither schema is a contract anybody promised to keep. Is writing those two readers part of closing this, or is the matrix the answer and the gap stays?
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