docs: update documentation to match current implementation

- SKILLS.md: Update roadmap phases with actual completion status
  - Phase 0-1 complete, Phase 2-5 partial, resolved design decisions
- OVERVIEW.md: Add HttpServer, Test effect, JIT to completed features
- ROADMAP.md: Add HttpServer, Process, Test effects to done list
- VISION.md: Update Phase 2-3 tables with current status
- guide/05-effects.md: Add Time, HttpServer, Test to effects table
- guide/09-stdlib.md: Add HttpServer, Time, Test effect docs
- reference/syntax.md: Fix interpolation syntax, remove unsupported literals
- testing.md: Add native Test effect documentation

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docs/VISION.md

@@ -124,25 +124,29 @@ fn retry<F>(action: F, times: Int): Result
 | REPL | Done | Interactive development |
 | Type Checking | Done | With effect tracking |
 
-### Needed for Real Use (Phase 2: Practical)
+### Completed (Phase 2: Practical)
 
-| Feature | Effort | Why It Matters |
-|---------|--------|----------------|
-| **Module System** | Done | Imports, exports, aliases, selective imports |
-| **Standard Library** | Done | List.map, String.split, Option.map, etc. |
-| **File/Network Effects** | 1-2 weeks | Real IO beyond Console |
-| **Better Error Messages** | 2-3 weeks | Elm-quality diagnostics |
-| **Full Compilation** | 4-6 weeks | Cranelift JIT exists for numeric code; needs strings, ADTs, effects |
+| Feature | Status | Notes |
+|---------|--------|-------|
+| **Module System** | ✅ Done | Imports, exports, aliases, selective imports |
+| **Standard Library** | ✅ Done | List, String, Option, Result, Math, Json modules |
+| **File Effect** | ✅ Done | read, write, exists, delete, listDir, mkdir |
+| **HTTP Client Effect** | ✅ Done | get, post, put, delete |
+| **HTTP Server Effect** | ✅ Done | listen, accept, respond, stop |
+| **Process Effect** | ✅ Done | exec, env, args, cwd, exit |
+| **Random/Time Effects** | ✅ Done | int, float, bool, now, sleep |
+| **JIT Compiler** | ✅ Partial | Numeric code ~160x faster, strings/ADTs pending |
+| **Error Messages** | ✅ Partial | Context lines shown, suggestions improving |
 
-### Needed for Full Vision (Phase 3: Differentiation)
+### In Progress (Phase 3: Differentiation)
 
-| Feature | Effort | Why It Matters |
-|---------|--------|----------------|
-| **Schema Evolution** | 4-6 weeks | The versioned types system |
-| **Behavioral Types** | 4-6 weeks | is pure, is idempotent, etc. |
-| **Effect Tracing/Debugging** | 2-3 weeks | Elm-like debugging |
-| **LSP Server** | 3-4 weeks | IDE support |
-| **Package Manager** | 2-3 weeks | Share code |
+| Feature | Status | Notes |
+|---------|--------|-------|
+| **Schema Evolution** | ⚠️ Partial | Parsing done, type integration pending |
+| **Behavioral Types** | ⚠️ Partial | Parsing done, verification pending |
+| **LSP Server** | ✅ Done | Diagnostics, hover, completions working |
+| **Package Manager** | ⚠️ Partial | Manifest parsing exists |
+| **Effect Tracing** | Planned | Elm-like debugging |
 
 ---