Add Unicode text entry via clipboard (emoji / CJK)

[JE-Chen]

Summary

Round-11, automation-core. write types through the platform virtual-key table and raises on any character outside it (emoji, CJK, many accented letters), so non-ASCII text entry was impossible. The reliable cross-platform way is clipboard + paste.

Layers

• Headless core: je_auto_control/utils/text_unicode/text_unicode.py — type_unicode (set clipboard + paste hotkey, any Unicode), plan_paste (the op-plan), unicode_code_units (UTF-16 split incl. surrogate pairs, for KEYEVENTF_UNICODE backends). Injectable sink; no PySide6.
• Facade: all three re-exported + __all__.
• Executor: AC_type_unicode.
• MCP: ac_type_unicode (SIDE_EFFECT_ONLY).
• Script Builder: one CommandSpec under Keyboard.

Tests / docs

• test/unit_test/headless/test_text_unicode_batch.py — 7 headless tests (ASCII/BMP/astral surrogate pairs, paste plan, dispatch via sink + wiring + facade). No real clipboard.
• EN/Zh feature docs v122_features_doc.rst + toctrees; 3 WHATS_NEW entries.

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[codacy-production]

Not up to standards ⛔

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud