Merge pull request #592: feat(cli-registry): GitHub Copilot CLI as a run mode

GitHub Copilot CLI (`copilot`) becomes a run mode: Run menu, welcome
screen, cron and CLI management once it is installed, tmux-backed like
the other agent CLIs, working/idle and the model read off its footer,
launch options through `copilotConfig` (model, resume, continue, the
multi-user-clamped allowAll), Custom Model Endpoints via Copilot's BYOK
variables, MCP sync of its mcp-config.json, a status probe, and the
`codeman agent` verbs (spawn waits for its composer, read returns its
last answer).

The plan-usage quota row that earlier rounds carried was split out on
review and is not part of this merge.

Merge-time commits on top: the wider COPILOT_* clamp and the zh-CN
README rows (maintainer), the Docker sign-in docs, divider rows inside
an answer kept by `agent read`, route tests for the screen-read
last-response branch, and doc drift (Past Sessions, wheelForward JSDoc,
COPILOT_/OMP_ in the env prefix lists).

Verified before merge on Copilot CLI 1.0.98: injected keystrokes,
bracketed paste and Enter reach the TUI in tmux (github/copilot-cli#4180
does not reproduce), a shell tool call completes inside tmux (#4223 does
not reproduce), and a session driven through this branch answered over
send-and-wait.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

.changeset/cli-copilot.md

@@ -0,0 +1,5 @@
+---
+'aicodeman': minor
+---
+
+GitHub Copilot CLI is a run mode. It appears in the Run menu, the welcome screen and the cron agent list once `copilot` is installed, runs in tmux like the other agent CLIs, reports working and idle from its `Working` footer, shows the model it reads off its footer on the tab, and is listed in CLI management with an install command (`npm install -g @github/copilot`). It takes the same launch options as the other agent CLIs: a `copilotConfig` on the session create and quick-start bodies with `model` (`--model`), `resumeSessionId` (`--resume`), `continueSession` (`--continue`, which Past Sessions sends) and `allowAll` (`--yolo`, which the Run button sends and which is clamped off for non-granted multi-user owners), a tab name you set yourself as `--name`, Custom Model Endpoints through Copilot's BYOK variables, MCP sync of its `mcp-config.json`, and a `GET /api/copilot/status` probe. A plain drag selects text (Auto Copy works) while the wheel and phone swipes scroll its transcript, `codeman agent spawn` waits for its composer, and `codeman agent read` returns its last answer.