### Command Addition

Added a command: `entire repo clone /gh/entirehq/entire-api`, which checks if there's an existing mirror of that repo. If there's only one cell, it does the git clone. If it's available in more than one cell, it lets you select in the same interactive way `entire repo mirror create` does today. It should also allow an optional positional argument target directory. Pass that argument through to the `git` clone call.

### What it does:

- Parses `/gh/<owner>/<repo>` (leading slash optional, owner/repo lowercased, same charset guards as mirror create).
- Lists mirror placements of that repo via the control plane (server-side provider+owner filter, client-side repo match).
- **0 mirrors** → error pointing at `entire repo mirror create`.
- **1 cell** → clones immediately.
- **>1 cell** → interactive `huh` picker (cell · jurisdiction · host), same style as `mirror create`.
- Optional `[target-dir]` passed straight through to `git clone entire://<host>/gh/<owner>/<repo> [target-dir]`.

### Tradeoffs / notes:

- Non-interactive + multiple cells: errors with a `--cluster <host>` pointer rather than hanging. Added a `--cluster` flag for scripting/disambiguation.
- Picker is single-select (you clone from one cell), not multi-select like create.
- Doesn't filter by mirror status — a suspended/processing placement is still offered; `git clone` surfaces the failure. Easy to tighten later if you want only `ready` cells listed.

### Commit Summary

- Committed as `69c03282a` on `shimmying-gliding-mitten`.

#### **Changes and Features**

- `entire clone <repo> [target-dir]` — top-level alias, visible in root help, same code as `entire repo clone` (fresh command instance since cobra forbids one command under two parents; carries `--json`/`--insecure-http-auth` persistent flags the repo group otherwise supplies).
- **Lint fix done right:** moved `agentimport.Importer`'s ireturn suppression from a per-line `//nolint` into the `.golangci.yaml` allowlist, and removed the directive. The per-line form was being repeatedly stripped by `mise run lint`'s `--fix`, which then tripped CI (no `--fix`). Allowlisting is stable against that.

### Testing and Verification

Tests cover ref parsing, cell labels, target selection (single/dedupe/`--cluster` match+miss/non-interactive), and the client-side repo filter. `mise run fmt && lint` clean; full `cmd/entire/cli` suite passes.

### Review Process

- PR: [Pull Request 1529](https://github.com/entireio/cli/pull/1529).
- **Ctrl+C bug fixed:** the picker cancellation returned a zero-value mirror with a nil error, so clone fell through to `git clone entire:///gh/...` (empty host). Now a cancelled picker is a silent abort — it just prints "Clone cancelled." and exits cleanly, no git invocation.
