feat(ovsm): add Python-style (#) comment support

**Enhancement:**
Added support for Python-style # comments in OVSM scripts, complementing
the existing // C-style comments.

**Problem Solved:**
AI agents were generating OVSM code with # comments, which caused tokenization
errors. This enhancement allows both comment styles, making OVSM more compatible
with AI-generated code and more user-friendly.

**Implementation:**
- Modified scanner.rs to recognize '#' character
- Comments extend from # to end of line
- Works alongside existing // comment support

**Test Results:**
✅ Both # and // comments work correctly
✅ Inline comments supported
✅ Multiple comment styles can coexist in same script
✅ 10 transactions counted successfully with commented code

**Impact:**
- Improves AI agent compatibility
- Makes OVSM more familiar to Python developers
- Enables better code documentation

**Example:**
```ovsm
# This is a Python-style comment
CONST ADDRESS = "6EF8..." // C-style comment also works
$result = getSignatures(address: ADDRESS, limit: 10)  # Inline comment
RETURN COUNT($result)
```

**Files Changed:**
- crates/ovsm/src/lexer/scanner.rs (lines 97-102)

Author: 0xrinegade

crates/ovsm/src/lexer/scanner.rs

@@ -94,6 +94,12 @@ impl Scanner {
                     self.add_token(TokenKind::Star);
                 }
             }
+            '#' => {
+                // Python-style comment
+                while self.peek() != '\n' && !self.is_at_end() {
+                    self.advance();
+                }
+            }
             '/' => {
                 if self.match_char('/') {
                     // Line comment