chore(changeset): cli patch for the text-face exit-signal fix

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016GiHYRmLSNWTfbX9gVQkpz

Author: claude

.changeset/21496-text-face-exit-signal.md

@@ -0,0 +1,16 @@
+---
+'@objectstack/cli': patch
+---
+
+fix(cli): `os package install`, `os package publish` and `os plugin sign` print one error line per refusal (#21496)
+
+Clause-②: no
+
+`os package install ./does-not-exist.json` printed `✗ Cannot read artifact: ENOENT …` and then a second line, `✗ EEXIT: 1`. The exit status, 1, was right. The extra line came from the command's own `catch`: the `this.exit(1)` inside its `try` throws oclif's exit signal, and the `catch` reported the signal as an error.
+
+The same `catch` sat in two more commands:
+
+- **`os package publish`.** Every refusal it makes printed the extra `✗ EEXIT: 1` line. Examples are an unreadable artifact, an invalid manifest id, no cloud login, a failed package registration and a failed version publish. An `--icon-file` whose image type it cannot infer printed three error lines: the refusal, then `✗ Cannot read --icon-file '…': EEXIT: 1`, then `✗ EEXIT: 1`.
+- **`os plugin sign`.** A signature that failed its self-verification printed `✗ Self-verification error: EEXIT: 1` under the refusal.
+
+Each refusal is now one error line, and every exit status is unchanged. A script that filtered out the `EEXIT` line can drop that filter.