refactor: apply minimal tfcode branding

- Rename packages/opencode → packages/tfcode (directory only)
- Rename bin/opencode → bin/tfcode (CLI binary)
- Rename .opencode → .tfcode (config directory)
- Update package.json name and bin field
- Update config directory path references (.tfcode)
- Keep internal code references as 'opencode' for easy upstream sync
- Keep @opencode-ai/* workspace package names

This minimal branding approach allows clean merges from upstream
opencode repository while providing tfcode branding for users.

.tfcode/glossary/no.md

@@ -0,0 +1,38 @@
+# no Glossary
+
+## Sources
+
+- PR #10018: https://github.com/anomalyco/opencode/pull/10018
+- PR #12935: https://github.com/anomalyco/opencode/pull/12935
+
+## 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`
+- Sound names (PR #10018 notes these were intentionally left untranslated)
+
+## Preferred Terms
+
+These are PR-backed corrections and may evolve.
+
+| English / Context                   | Preferred    | Notes                         |
+| ----------------------------------- | ------------ | ----------------------------- |
+| Save (data persistence action)      | `Lagre`      | Prefer over `Spare`           |
+| Disabled (feature/state)            | `deaktivert` | Prefer over `funksjonshemmet` |
+| API keys                            | `API Nøkler` | Prefer over `API Taster`      |
+| Cost (noun)                         | `Kostnad`    | Prefer over verb form `Koste` |
+| Show/View (imperative button label) | `Vis`        | Prefer over `Utsikt`          |
+
+## Guidance
+
+- Prefer natural Norwegian Bokmal (Bokmål) wording over literal translation
+- Keep tone clear and practical in UI labels
+- Preserve technical artifacts exactly: commands, flags, code, URLs, model IDs, and file paths
+- Keep recurring UI terms consistent once a preferred term is chosen
+
+## Avoid
+
+- Avoid `Spare` for save actions in persistence contexts
+- Avoid `funksjonshemmet` for disabled feature states
+- Avoid `API Taster`, `Koste`, and `Utsikt` in the corrected contexts above