docs: highlight unique advantages — standalone, HAMT, multi-target

Update README and architecture docs to emphasize:
- Complete independence from Java ecosystem (JVM, GraalVM, Closure)
- Native HAMT persistent data structures built from scratch in Nim
- Multi-target compilation (native, shared lib, WASM, JS)
- AI-native tooling and concurrency without JVM threads

Updates both English and Bulgarian documentation.

docs/en/02-architecture.md

@@ -45,6 +45,40 @@ Clojure/Nim is a **compiler**, not an interpreter. It follows the model of Cloju
   └─────────┘
 ```
 
+## Unique Advantages
+
+### Independence from the Java Ecosystem
+Clojure/Nim is the **only** Clojure dialect with absolutely no dependency on the Java ecosystem:
+
+| Dialect | JVM Required | GraalVM | Google Closure | Java stdlib |
+|---------|-------------|---------|----------------|-------------|
+| Clojure (JVM) | ✅ | ❌ | ❌ | ✅ |
+| ClojureScript | ❌ | ❌ | ✅ | ❌ |
+| Babashka | ❌ | ✅ | ❌ | Partial |
+| **Clojure/Nim** | ❌ | ❌ | ❌ | ❌ |
+
+This means:
+- **No JVM warmup** — binaries start instantly
+- **No GraalVM complexity** — no native-image configuration
+- **No Java installation required** — the compiler itself is a single binary
+- **True standalone deployment** — one file, zero runtime dependencies
+
+### Native HAMT Implementation
+Our persistent data structures are built from scratch in Nim, optimized for Nim's ORC garbage collector:
+- **32-way branching** like Clojure's `PersistentVector`, but without Java object overhead
+- **Structural sharing** via copy-on-write HAMT nodes
+- **O(log₃₂ n)** for `assoc`/`dissoc`/`nth` — same asymptotic complexity as JVM Clojure
+- **Nim ref objects** instead of Java interfaces — simpler memory layout, better cache locality
+
+### Multi-Target Compilation
+The same Clojure source compiles to four different targets from one codebase:
+1. **Native binary** — `nim c` → C → machine code
+2. **Shared library** — `nim c --app:lib` → `.so` / `.dll` / `.dylib`
+3. **WASM** — `nim c -d:emscripten` → browser-native WebAssembly
+4. **JavaScript** — `nim js` → browser/Node.js
+
+No other Clojure implementation offers this breadth of targets without external tools.
+
 ## Key Design Decisions
 
 ### 1. AOT Compiler