fix: 控制台 should remain unchanged across all conversion modes

[Copilot]

「控制台」was being converted to「控制檯」by an STPhrases rule, but「控制台」is the correct and preferred form — it should never be converted in any direction.

Changes

• data/dictionary/STPhrases.txt: Replace 控制台 → 控制檯 with identity mapping 控制台 → 控制台, blocking the character-level 台 → 臺 fallback in all s2* modes
• data/dictionary/HKVariantsRevPhrases.txt: Add identity entry 控制台 → 控制台 to suppress hk2t's 台 → 臺 rule (derived from HKVariants: 臺 → 台 reversed)
• test/testcases/testcases.json: Add console_stays_unchanged test covering all 12 conversion modes (s2t, s2tw, s2twp, s2hk, t2s, t2tw, t2hk, tw2s, tw2sp, tw2t, hk2s, hk2t)

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 91b01ce7b0

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[chatgpt-codex-connector]

Restrict 控制台 identity to standalone hk2t use

Adding 控制台 控制台 here makes hk2t treat any 控制台* prefix as a fixed phrase, not just the standalone noun. With max-match segmentation (src/MaxMatchSegmentation.cpp) and dictionary priority (HKVariantsRevPhrases before HKVariantsRev), the 台 -> 臺 character conversion is skipped inside that segment, so strings like 控制台北 now remain 控制台北 instead of converting to 控制臺北. This introduces a conversion-accuracy regression for longer phrases that start with 控制台.

Useful? React with 👍 / 👎.