feat: add remaining cohort scripts (#4)

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### Tests

- [ ] My contribution adds new code, and I have added tests to cover it.
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Reviewed-on: #4
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

python/cohort/add_github_team_members.py

@@ -0,0 +1,133 @@
+#!/usr/bin/env python3
+"""Add GitHub users to their appropriate teams in nhcarrigan-spring-2026-cohort org"""
+
+import json
+import subprocess
+import time
+
+# Load team assignments and Discord to GitHub mappings
+with open("team_assignments.json") as f:
+    teams = json.load(f)
+
+with open("discord_to_github.json") as f:
+    discord_to_github = json.load(f)
+
+# Map team names to GitHub team slugs
+team_name_to_slug = {
+    "Jade Jasmine": "jade-jasmine",
+    "Crimson Dahlia": "crimson-dahlia",
+    "Rose Camellia": "rose-camellia",
+    "Amber Wisteria": "amber-wisteria",
+    "Ivory Orchid": "ivory-orchid",
+    "Teal Iris": "teal-iris",
+    "Peach Gardenia": "peach-gardenia",
+    "Violet Carnation": "violet-carnation",
+    "Azure Lotus": "azure-lotus",
+    "Coral Sunflower": "coral-sunflower",
+    "Indigo Tulip": "indigo-tulip",
+    "Scarlet Hydrangea": "scarlet-hydrangea",
+    "Mint Narcissus": "mint-narcissus",
+    "Sage Marigold": "sage-marigold",
+}
+
+org = "nhcarrigan-spring-2026-cohort"
+total_added = 0
+total_skipped = 0
+total_errors = 0
+
+
+def add_user_to_team(username, team_slug, role="member"):
+    """Add a user to a GitHub team"""
+    try:
+        # Check if user is already a member
+        check_cmd = (
+            f"gh api orgs/{org}/teams/{team_slug}/memberships/{username} 2>/dev/null"
+        )
+        result = subprocess.run(
+            check_cmd, shell=True, capture_output=True, text=True, check=False
+        )
+
+        if result.returncode == 0:
+            print(f"  ✓ {username} is already in {team_slug}")
+            return "already_member"
+
+        # Add user to team
+        add_cmd = (
+            f"gh api -X PUT orgs/{org}/teams/{team_slug}/memberships/{username} "
+            f"-f role={role}"
+        )
+        result = subprocess.run(
+            add_cmd, shell=True, capture_output=True, text=True, check=False
+        )
+
+        if result.returncode == 0:
+            print(f"  ✓ Added {username} to {team_slug} as {role}")
+            return "added"
+        else:
+            print(f"  ✗ Failed to add {username} to {team_slug}: {result.stderr}")
+            return "error"
+    except Exception as e:
+        print(f"  ✗ Error adding {username} to {team_slug}: {str(e)}")
+        return "error"
+
+
+# Process each team
+for team_data in teams:
+    team_name = team_data["name"]
+    team_slug = team_name_to_slug[team_name]
+
+    print(f"\n{'=' * 60}")
+    print(f"Processing Team {team_data['team_id']}: {team_name}")
+    print(f"{'=' * 60}")
+
+    # Add leaders to leaders team
+    leaders_team_slug = f"{team_slug}-leaders"
+    print(f"\nAdding leaders to {leaders_team_slug}:")
+
+    for discord_id in team_data["leaders"]:
+        github_username = discord_to_github.get(discord_id)
+        if not github_username or github_username == "nhcarrigan-2025-hackathon":
+            print(
+                f"  ⚠ Skipping Discord ID {discord_id} - "
+                "Missing/invalid GitHub username"
+            )
+            total_skipped += 1
+            continue
+
+        result = add_user_to_team(github_username, leaders_team_slug, "member")
+        if result == "added":
+            total_added += 1
+        elif result == "error":
+            total_errors += 1
+
+        # Rate limiting
+        time.sleep(0.5)
+
+    # Add participants to main team
+    print(f"\nAdding participants to {team_slug}:")
+
+    for discord_id in team_data["participants"]:
+        github_username = discord_to_github.get(discord_id)
+        if not github_username or github_username == "nhcarrigan-2025-hackathon":
+            print(
+                f"  ⚠ Skipping Discord ID {discord_id} - "
+                "Missing/invalid GitHub username"
+            )
+            total_skipped += 1
+            continue
+
+        result = add_user_to_team(github_username, team_slug, "member")
+        if result == "added":
+            total_added += 1
+        elif result == "error":
+            total_errors += 1
+
+        # Rate limiting
+        time.sleep(0.5)
+
+print(f"\n{'=' * 60}")
+print("Summary:")
+print(f"- Total users added: {total_added}")
+print(f"- Total users skipped (missing GitHub): {total_skipped}")
+print(f"- Total errors: {total_errors}")
+print(f"{'=' * 60}")