add README, party index, and letter indexes to output repo

- README.md with total count, party breakdown table, and directory links
- Parteien/<party>.md listing all members with links to their profiles
- Abgeordnete/<letter>/index.md listing all representatives per letter

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

crawler.py

@@ -151,6 +151,9 @@ def main():
     save_individuals(bios, args.out)
     save_votes(bios, args.out)
     save_disclosures(bios, args.out)
+    save_readme(bios, args.out)
+    save_party_index(bios, args.out)
+    save_letter_indexes(bios, args.out)
 
     if args.no_git:
         return
@@ -315,6 +318,65 @@ def save_votes(bios, out):
             f.write(md)
 
 
+def save_readme(bios, out):
+    date = datetime.now().strftime("%Y-%m-%d %H:%M")
+    total = len(bios)
+    parties = {}
+    for bio in bios:
+        parties[bio.party] = parties.get(bio.party, 0) + 1
+
+    md = f"# Bundestag\n\n"
+    md += f"Automatisch erfasste Daten der Abgeordneten des Deutschen Bundestages.\n\n"
+    md += f"**Abgeordnete:** {total}  \n"
+    md += f"**Letzte Aktualisierung:** {date}\n\n"
+    md += "## Parteien\n\n"
+    md += "| Partei | Abgeordnete |\n"
+    md += "|--------|------------:|\n"
+    for party, count in sorted(parties.items()):
+        md += f"| [{party}](Parteien/{party}.md) | {count} |\n"
+    md += f"\n## Verzeichnisse\n\n"
+    md += "- [Abgeordnete](Abgeordnete/) — Einzelprofile nach Nachname\n"
+    md += "- [Abstimmungen](Abstimmungen/) — Abstimmungen nach Thema\n"
+    md += "- [Veröffentlichungspflichtige Angaben](Voep_Angaben/) — Nebentätigkeiten\n"
+    md += "- [Parteien](Parteien/) — Abgeordnete nach Partei\n"
+
+    with open(f"{out}/README.md", "w", encoding="utf-8") as f:
+        f.write(md)
+
+
+def save_party_index(bios, out):
+    dir = f"{out}/Parteien"
+    makedirs(dir, exist_ok=True)
+    for party, bio_list in group_by_party(bios):
+        md = f"# {party}\n\n"
+        md += f"{len(bio_list)} Abgeordnete\n\n"
+        for bio in sorted(bio_list, key=lambda b: b.name):
+            first_letter = bio.name[0][0].upper()
+            name_str = f"{bio.name[0]} {bio.name[1]}".replace(" ", "_")
+            md += f"- [{bio.name[1]} {bio.name[0]}](../Abgeordnete/{first_letter}/{name_str}.md)"
+            if bio.job:
+                md += f" — {bio.job}"
+            md += "\n"
+        with open(f"{dir}/{party}.md", "w", encoding="utf-8") as f:
+            f.write(md)
+
+
+def save_letter_indexes(bios, out):
+    by_letter = {}
+    for bio in bios:
+        letter = bio.name[0][0].upper()
+        if letter not in by_letter:
+            by_letter[letter] = []
+        by_letter[letter].append(bio)
+    for letter, bio_list in sorted(by_letter.items()):
+        md = f"# {letter}\n\n"
+        for bio in sorted(bio_list, key=lambda b: b.name):
+            name_str = f"{bio.name[0]} {bio.name[1]}".replace(" ", "_")
+            md += f"- [{bio.name[1]} {bio.name[0]}]({name_str}.md) ({bio.party})\n"
+        with open(f"{out}/Abgeordnete/{letter}/index.md", "w", encoding="utf-8") as f:
+            f.write(md)
+
+
 def group_by_party(bios):
     grouped = {}
     for bio in bios: