feat: integrate monaco-languageclient v10 with NWScript LSP

Replace hand-rolled LSP client (lspClient.ts, useLspClient.ts) with
monaco-languageclient v10 extended mode using @typefox/monaco-editor-react.
NWScript TextMate grammar from the LSP submodule provides syntax highlighting.
Full LSP features: completion, hover, diagnostics, go-to-definition, signature
help — all wired through WebSocket to the nwscript-language-server.

LSP server patches: fix workspaceFolders null assertion crash, handle missing
workspace/configuration gracefully, derive rootPath from rootUri when null,
guard tokenizer getRawTokenContent against undefined tokens.

Backend fixes: WebSocket routing changed to noServer mode so /ws, /ws/lsp,
and /ws/terminal/* don't conflict. TLK index loaded at startup (41,927 entries
from nwn-haks/layonara.tlk.json). Workspace routes get proper try/catch.
writeConfig creates parent directories. setupClone ensures workspace structure.

Frontend: GffEditor and AreaEditor rewritten with inline styles and TLK
resolution for CExoLocString fields. EditorTabs rewritten with lucide icons.
Tab content hydrates from API on refresh. Setup wizard gets friendly error
messages. SimpleEditor/SimpleDiffEditor for non-LSP editor uses. Vite config
updated for monaco-vscode-api compatibility.

.agents/skills/impeccable/reference/ux-writing.md

@@ -0,0 +1,107 @@
+# UX Writing
+
+## The Button Label Problem
+
+**Never use "OK", "Submit", or "Yes/No".** These are lazy and ambiguous. Use specific verb + object patterns:
+
+| Bad | Good | Why |
+|-----|------|-----|
+| OK | Save changes | Says what will happen |
+| Submit | Create account | Outcome-focused |
+| Yes | Delete message | Confirms the action |
+| Cancel | Keep editing | Clarifies what "cancel" means |
+| Click here | Download PDF | Describes the destination |
+
+**For destructive actions**, name the destruction:
+- "Delete" not "Remove" (delete is permanent, remove implies recoverable)
+- "Delete 5 items" not "Delete selected" (show the count)
+
+## Error Messages: The Formula
+
+Every error message should answer: (1) What happened? (2) Why? (3) How to fix it? Example: "Email address isn't valid. Please include an @ symbol." not "Invalid input".
+
+### Error Message Templates
+
+| Situation | Template |
+|-----------|----------|
+| **Format error** | "[Field] needs to be [format]. Example: [example]" |
+| **Missing required** | "Please enter [what's missing]" |
+| **Permission denied** | "You don't have access to [thing]. [What to do instead]" |
+| **Network error** | "We couldn't reach [thing]. Check your connection and [action]." |
+| **Server error** | "Something went wrong on our end. We're looking into it. [Alternative action]" |
+
+### Don't Blame the User
+
+Reframe errors: "Please enter a date in MM/DD/YYYY format" not "You entered an invalid date".
+
+## Empty States Are Opportunities
+
+Empty states are onboarding moments: (1) Acknowledge briefly, (2) Explain the value of filling it, (3) Provide a clear action. "No projects yet. Create your first one to get started." not just "No items".
+
+## Voice vs Tone
+
+**Voice** is your brand's personality—consistent everywhere.
+**Tone** adapts to the moment.
+
+| Moment | Tone Shift |
+|--------|------------|
+| Success | Celebratory, brief: "Done! Your changes are live." |
+| Error | Empathetic, helpful: "That didn't work. Here's what to try..." |
+| Loading | Reassuring: "Saving your work..." |
+| Destructive confirm | Serious, clear: "Delete this project? This can't be undone." |
+
+**Never use humor for errors.** Users are already frustrated. Be helpful, not cute.
+
+## Writing for Accessibility
+
+**Link text** must have standalone meaning—"View pricing plans" not "Click here". **Alt text** describes information, not the image—"Revenue increased 40% in Q4" not "Chart". Use `alt=""` for decorative images. **Icon buttons** need `aria-label` for screen reader context.
+
+## Writing for Translation
+
+### Plan for Expansion
+
+German text is ~30% longer than English. Allocate space:
+
+| Language | Expansion |
+|----------|-----------|
+| German | +30% |
+| French | +20% |
+| Finnish | +30-40% |
+| Chinese | -30% (fewer chars, but same width) |
+
+### Translation-Friendly Patterns
+
+Keep numbers separate ("New messages: 3" not "You have 3 new messages"). Use full sentences as single strings (word order varies by language). Avoid abbreviations ("5 minutes ago" not "5 mins ago"). Give translators context about where strings appear.
+
+## Consistency: The Terminology Problem
+
+Pick one term and stick with it:
+
+| Inconsistent | Consistent |
+|--------------|------------|
+| Delete / Remove / Trash | Delete |
+| Settings / Preferences / Options | Settings |
+| Sign in / Log in / Enter | Sign in |
+| Create / Add / New | Create |
+
+Build a terminology glossary and enforce it. Variety creates confusion.
+
+## Avoid Redundant Copy
+
+If the heading explains it, the intro is redundant. If the button is clear, don't explain it again. Say it once, say it well.
+
+## Loading States
+
+Be specific: "Saving your draft..." not "Loading...". For long waits, set expectations ("This usually takes 30 seconds") or show progress.
+
+## Confirmation Dialogs: Use Sparingly
+
+Most confirmation dialogs are design failures—consider undo instead. When you must confirm: name the action, explain consequences, use specific button labels ("Delete project" / "Keep project", not "Yes" / "No").
+
+## Form Instructions
+
+Show format with placeholders, not instructions. For non-obvious fields, explain why you're asking.
+
+---
+
+**Avoid**: Jargon without explanation. Blaming users ("You made an error" → "This field is required"). Vague errors ("Something went wrong"). Varying terminology for variety. Humor for errors.