Add Doris Schoolhouse and clean pending homelab changes

home/doris-schoolhouse/bin/apply-postgres-schema.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+cd "$(dirname "$0")/.."
+SCHEMA_FILE="app/db/schema.sql"
+if [ ! -f "$SCHEMA_FILE" ]; then
+  echo "schema file missing: $SCHEMA_FILE" >&2
+  exit 1
+fi
+
+if [ -n "${DATABASE_URL:-}" ] && command -v python3 >/dev/null 2>&1; then
+  export PYTHONPATH=.
+  python3 app/scripts/apply_schema.py
+  exit $?
+fi
+
+cat >&2 <<'MSG'
+Cannot apply schema automatically.
+Requirements:
+- DATABASE_URL must be set
+- python3 must be available
+- psycopg must be installed for direct apply
+Alternative: run the SQL in app/db/schema.sql manually against the schoolhouse database.
+MSG
+exit 1

home/doris-schoolhouse/bin/bootstrap-local.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+cd "$(dirname "$0")/.."
+export SCHOOLHOUSE_STORAGE_BACKEND="${SCHOOLHOUSE_STORAGE_BACKEND:-json}"
+export SCHOOLHOUSE_STATE_DIR="${SCHOOLHOUSE_STATE_DIR:-/tmp/doris-schoolhouse-state}"
+export UPLOAD_TMP_DIR="${UPLOAD_TMP_DIR:-/tmp/doris-schoolhouse-uploads}"
+export PYTHONPATH=.
+python3 app/scripts/bootstrap_state.py

home/doris-schoolhouse/bin/check-env.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+have() { command -v "$1" >/dev/null 2>&1; }
+
+printf 'Doris Schoolhouse environment check\n'
+printf '================================\n'
+
+for cmd in python3 ffmpeg psql docker curl; do
+  if have "$cmd"; then
+    printf '%-10s %s\n' "$cmd" "$(command -v "$cmd")"
+  else
+    printf '%-10s %s\n' "$cmd" "MISSING"
+  fi
+done
+
+python3 - <<'PY'
+import importlib.util
+mods = ['fastapi', 'uvicorn', 'psycopg']
+for mod in mods:
+    print(f'{mod:10} ', 'installed' if importlib.util.find_spec(mod) else 'MISSING')
+PY

home/doris-schoolhouse/bin/process-recording.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+if [ "$#" -lt 1 ]; then
+  echo "usage: $0 <recording_id>" >&2
+  exit 1
+fi
+cd "$(dirname "$0")/.."
+export SCHOOLHOUSE_STORAGE_BACKEND="${SCHOOLHOUSE_STORAGE_BACKEND:-json}"
+export SCHOOLHOUSE_STATE_DIR="${SCHOOLHOUSE_STATE_DIR:-/tmp/doris-schoolhouse-state}"
+export UPLOAD_TMP_DIR="${UPLOAD_TMP_DIR:-/tmp/doris-schoolhouse-uploads}"
+export PYTHONPATH=.
+python3 app/scripts/process_recording.py "$1"

home/doris-schoolhouse/bin/run-local.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+cd "$(dirname "$0")/.."
+export SCHOOLHOUSE_STORAGE_BACKEND="${SCHOOLHOUSE_STORAGE_BACKEND:-json}"
+export SCHOOLHOUSE_STATE_DIR="${SCHOOLHOUSE_STATE_DIR:-/tmp/doris-schoolhouse-state}"
+export UPLOAD_TMP_DIR="${UPLOAD_TMP_DIR:-/tmp/doris-schoolhouse-uploads}"
+export PYTHONPATH=.
+uvicorn app.main:app --host 0.0.0.0 --port "${SCHOOLHOUSE_PORT:-8091}"

home/doris-schoolhouse/bin/test-assignment-handoff.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+if [ "$#" -lt 2 ]; then
+  echo "usage: $0 <file> <class_name> [assignment_name]" >&2
+  exit 1
+fi
+FILE="$1"
+CLASS_NAME="$2"
+ASSIGNMENT_NAME="${3:-Sample Assignment}"
+TARGET="${N8N_BASE_URL:-https://n8n.example.com}${SCHOOLHOUSE_N8N_ASSIGNMENT_WEBHOOK:-/webhook/school/intake/upload}"
+cat <<MSG
+Dry-run assignment handoff preview
+Target: $TARGET
+Command:
+curl -X POST "$TARGET" \\
+  -F "document=@$FILE" \\
+  -F "class_name=$CLASS_NAME" \\
+  -F "assignment_name=$ASSIGNMENT_NAME" \\
+  -F "submission_kind=assignment_turn_in" \\
+  -F "source=doris-schoolhouse"
+MSG

home/doris-schoolhouse/bin/test-recording-handoff.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+if [ "$#" -lt 2 ]; then
+  echo "usage: $0 <file> <class_name>" >&2
+  exit 1
+fi
+FILE="$1"
+CLASS_NAME="$2"
+TARGET="${N8N_BASE_URL:-https://n8n.example.com}${SCHOOLHOUSE_N8N_RECORDING_WEBHOOK:-/webhook/class/upload}"
+cat <<MSG
+Dry-run recording handoff preview
+Target: $TARGET
+Command:
+curl -X POST "$TARGET" \\
+  -F "data=@$FILE" \\
+  -F "class_name=$CLASS_NAME" \\
+  -F "lecture_title=${CLASS_NAME} Recording" \\
+  -F "source=doris-schoolhouse"
+MSG