chore: updated locale glossaries and docs sync workflow

.opencode/agent/glossary/th.md

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+# th Glossary
+
+## Sources
+
+- PR #10809: https://github.com/anomalyco/opencode/pull/10809
+- PR #11496: https://github.com/anomalyco/opencode/pull/11496
+
+## Do Not Translate (Locale Additions)
+
+- `OpenCode` (preserve casing in prose; keep `opencode` only in commands, package names, paths, or code)
+- `OpenCode CLI`
+- `CLI`, `TUI`, `MCP`, `OAuth`
+- Commands, flags, file paths, and code literals (keep exactly as written)
+
+## Preferred Terms
+
+These are PR-backed preferences and may evolve.
+
+| English / Context                     | Preferred             | Notes                                                                            |
+| ------------------------------------- | --------------------- | -------------------------------------------------------------------------------- |
+| Thai language label in language lists | `ไทย`                 | PR #10809 standardized this across locales                                       |
+| Language names in language pickers    | Native names (static) | PR #11496: keep names like `English`, `Deutsch`, `ไทย` consistent across locales |
+
+## Guidance
+
+- Prefer natural Thai phrasing over literal translation
+- Keep tone short and clear for buttons and labels
+- Preserve technical artifacts exactly: commands, flags, code, URLs, model IDs, and file paths
+- Keep language names static/native in language pickers instead of translating them per current locale (PR #11496)
+
+## Avoid
+
+- Avoid translating language names differently per current locale in language lists
+- Avoid changing `ไทย` to another display form for the Thai language option unless the product standard changes