feat(B2): add Microsoft Word (.docx) support

Implements ROADMAP task B2 — full .docx scraping support via mammoth +
python-docx, producing SKILL.md + references/ output identical to other
source types.

New files:
- src/skill_seekers/cli/word_scraper.py — WordToSkillConverter class +
  main() entry point (~600 lines); mammoth → BeautifulSoup pipeline;
  handles headings, code detection (incl. monospace <p><br> blocks),
  tables, images, metadata extraction
- src/skill_seekers/cli/arguments/word.py — add_word_arguments() +
  WORD_ARGUMENTS dict
- src/skill_seekers/cli/parsers/word_parser.py — WordParser for unified
  CLI parser registry
- tests/test_word_scraper.py — comprehensive test suite (~300 lines)

Modified files:
- src/skill_seekers/cli/main.py — registered "word" command module
- src/skill_seekers/cli/source_detector.py — .docx auto-detection +
  _detect_word() classmethod
- src/skill_seekers/cli/create_command.py — _route_word() + --help-word
- src/skill_seekers/cli/arguments/create.py — WORD_ARGUMENTS + routing
- src/skill_seekers/cli/arguments/__init__.py — export word args
- src/skill_seekers/cli/parsers/__init__.py — register WordParser
- src/skill_seekers/cli/unified_scraper.py — _scrape_word() integration
- src/skill_seekers/cli/pdf_scraper.py — fix: real enhancement instead
  of stub; remove [:3] reference file limit; capture run_workflows return
- src/skill_seekers/cli/github_scraper.py — fix: remove arbitrary
  open_issues[:20] / closed_issues[:10] reference file limits
- pyproject.toml — skill-seekers-word entry point + docx optional dep
- tests/test_cli_parsers.py — update parser count 21→22

Bug fixes applied during real-world testing:
- Code detection: detect monospace <p><br> blocks as code (mammoth
  renders Courier paragraphs this way, not as <pre>/<code>)
- Language detector: fix wrong method name detect_from_text →
  detect_from_code
- Description inference: pass None from main() so extract_docx() can
  infer description from Word document subject/title metadata
- Bullet-point guard: exclude prose starting with •/-/* from code scoring
- Enhancement: implement real API/LOCAL enhancement (was stub)
- pip install message: add quotes around skill-seekers[docx]

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/skill_seekers/cli/arguments/create.py

@@ -389,6 +389,18 @@ PDF_ARGUMENTS: dict[str, dict[str, Any]] = {
     },
 }
 
+# Word document specific (from word.py)
+WORD_ARGUMENTS: dict[str, dict[str, Any]] = {
+    "docx": {
+        "flags": ("--docx",),
+        "kwargs": {
+            "type": str,
+            "help": "DOCX file path",
+            "metavar": "PATH",
+        },
+    },
+}
+
 # Multi-source config specific (from unified_scraper.py)
 CONFIG_ARGUMENTS: dict[str, dict[str, Any]] = {
     "merge_mode": {
@@ -471,6 +483,7 @@ def get_source_specific_arguments(source_type: str) -> dict[str, dict[str, Any]]
         "github": GITHUB_ARGUMENTS,
         "local": LOCAL_ARGUMENTS,
         "pdf": PDF_ARGUMENTS,
+        "word": WORD_ARGUMENTS,
         "config": CONFIG_ARGUMENTS,
     }
     return source_args.get(source_type, {})
@@ -507,12 +520,13 @@ def add_create_arguments(parser: argparse.ArgumentParser, mode: str = "default")
     - 'github': Universal + github-specific
     - 'local': Universal + local-specific
     - 'pdf': Universal + pdf-specific
+    - 'word': Universal + word-specific
     - 'advanced': Advanced/rare arguments
     - 'all': All 120+ arguments
 
     Args:
         parser: ArgumentParser to add arguments to
-        mode: Help mode (default, web, github, local, pdf, advanced, all)
+        mode: Help mode (default, web, github, local, pdf, word, advanced, all)
     """
     # Positional argument for source
     parser.add_argument(
@@ -543,6 +557,10 @@ def add_create_arguments(parser: argparse.ArgumentParser, mode: str = "default")
         for arg_name, arg_def in PDF_ARGUMENTS.items():
             parser.add_argument(*arg_def["flags"], **arg_def["kwargs"])
 
+    if mode in ["word", "all"]:
+        for arg_name, arg_def in WORD_ARGUMENTS.items():
+            parser.add_argument(*arg_def["flags"], **arg_def["kwargs"])
+
     if mode in ["config", "all"]:
         for arg_name, arg_def in CONFIG_ARGUMENTS.items():
             parser.add_argument(*arg_def["flags"], **arg_def["kwargs"])