fix: replace unicode arrows in CLI help text for Windows cp1252 compatibility

Replace → (U+2192) with -> in argparse help strings. Windows cmd uses
cp1252 encoding which cannot render unicode arrows, causing --help to
crash with UnicodeEncodeError.

src/skill_seekers/cli/arguments/enhance.py

@@ -26,7 +26,7 @@ ENHANCE_ARGUMENTS: dict[str, dict[str, Any]] = {
             "help": (
                 "AI platform for enhancement (uses API mode). "
                 "Auto-detected from env vars if not specified: "
-                "ANTHROPIC_API_KEY→claude, GOOGLE_API_KEY→gemini, OPENAI_API_KEY→openai. "
+                "ANTHROPIC_API_KEY->claude, GOOGLE_API_KEY->gemini, OPENAI_API_KEY->openai. "
                 "Falls back to LOCAL mode (Claude Code CLI) when no API keys are found."
             ),
             "metavar": "PLATFORM",

src/skill_seekers/cli/create_command.py

@@ -626,17 +626,17 @@ Examples:
   Config:   skill-seekers create configs/react.json
 
 Source Auto-Detection:
-  • URLs/domains → web scraping
-  • owner/repo → GitHub analysis
-  • ./path → local codebase
-  • file.pdf → PDF extraction
-  • file.docx → Word document extraction
-  • file.epub → EPUB extraction
-  • youtube.com/... → Video transcript extraction
-  • file.mp4 → Video file extraction
-  • file.json → multi-source config
+  URLs/domains -> web scraping
+  owner/repo -> GitHub analysis
+  ./path -> local codebase
+  file.pdf -> PDF extraction
+  file.docx -> Word document extraction
+  file.epub -> EPUB extraction
+  youtube.com/... -> Video transcript extraction
+  file.mp4 -> Video file extraction
+  file.json -> multi-source config
 
-Progressive Help (13 → 120+ flags):
+Progressive Help (13 -> 120+ flags):
   --help-web       Web scraping options
   --help-github    GitHub repository options
   --help-local     Local codebase analysis

src/skill_seekers/cli/parsers/create_parser.py

@@ -35,8 +35,8 @@ Quick Examples:
   skill-seekers create ./my-project -p comprehensive
 
 Source Types (auto-detected):
-  URLs → web docs | owner/repo → GitHub | ./path → local code
-  file.pdf → PDF | file.json → config (multi-source)
+  URLs -> web docs | owner/repo -> GitHub | ./path -> local code
+  file.pdf -> PDF | file.json -> config (multi-source)
 
 Progressive Help (NEW -p shortcut):
   Default help shows 13 flags. For more: --help-web, --help-github,

src/skill_seekers/cli/parsers/install_parser.py

@@ -12,7 +12,7 @@ class InstallParser(SubcommandParser):
 
     @property
     def help(self) -> str:
-        return "Complete workflow: fetch → scrape → enhance → package → upload"
+        return "Complete workflow: fetch -> scrape -> enhance -> package -> upload"
 
     @property
     def description(self) -> str: