From d837f7a3357f2de2cd480aed418017471d319da5 Mon Sep 17 00:00:00 2001
From: t <t@tjp.lol>
Date: Fri, 16 Oct 2026 20:13:59 -0600
Subject: initial commit; basically working

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+# panto-copilot
+
+GitHub Copilot defaults for panto. Mark named tables; the extension fills the boilerplate.
+
+## Setup
+
+Requires panto's `configure(config)` extension hook (before auth/provider validation).
+
+```toml
+[extensions]
+rocks = ["panto-copilot"]
+
+[auth.copilot]
+panto_copilot_extension = true
+
+[providers.copilot]
+auth = "copilot"
+panto_copilot_extension = true
+```
+
+```sh
+panto auth login copilot
+panto models sync
+panto models list copilot:
+```
+
+## Defaults
+
+| Setting | Value |
+| --- | --- |
+| Auth | GitHub device OAuth, then Copilot token exchange; panto owns credentials/refresh |
+| APIs | Responses (default), Chat Completions, Anthropic Messages |
+| Endpoint | `https://api.individual.githubcopilot.com`; exchange may supply the account endpoint |
+| Catalog | `github-copilot` |
+| Identity | Copilot Chat `0.35.0`, VS Code `1.107.0`; all headers are overridable |
+
+## Rules
+
+- Only `panto_copilot_extension = true` opts in; auth/provider names are arbitrary.
+- Keep `providers.<name>.auth` explicit; the extension never guesses linkage.
+- Explicit values win, including nested endpoints and case-insensitive headers.
+- Defaults are independent per table/load; no config files are rewritten.
+- No network or credentials in Lua; env/session placeholders stay raw for panto.
+- Rigs must include this extension themselves; `--no-extensions` skips it.
+
+Existing flat `base_url` configurations stay flat; otherwise all three endpoints
+are filled. Overrides must remain valid panto configuration.
+
+## Packaging / checks
+
+```sh
+panto lua _selfcheck.lua
+luarocks lint panto-copilot-scm-1.rockspec
+```
+
+The rockspec maps `require("panto-copilot")` to `init.lua`; no dependencies
+beyond Lua.
+
+## References
+
+- [GitHub device authorization](https://docs.github.com/en/apps/oauth-apps/building-oauth-apps/authorizing-oauth-apps#device-flow)
+- Defaults match the existing panto Copilot configuration; identity versions are not auto-updated.
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