Update docs, sprint plans, and compose configuration

Add 12 new sprint files (Integrations, Graph, JobEngine, FE, Router,
AdvisoryAI), archive completed scheduler UI sprint, update module
architecture docs (router, graph, jobengine, web, integrations),
and add Gitea entrypoint script for local dev.

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

devops/compose/scripts/gitea-entrypoint.sh

@@ -0,0 +1,66 @@
+#!/bin/sh
+
+set -eu
+
+GITEA_CONFIG="${GITEA_APP_INI:-/etc/gitea/app.ini}"
+GITEA_WORK_PATH="${GITEA_WORK_DIR:-/var/lib/gitea}"
+GITEA_HTTP_PORT="${GITEA__server__HTTP_PORT:-3000}"
+GITEA_ADMIN_USERNAME="${GITEA_LOCAL_ADMIN_USERNAME:-stellaops}"
+GITEA_ADMIN_PASSWORD="${GITEA_LOCAL_ADMIN_PASSWORD:-Stella2026!}"
+GITEA_ADMIN_EMAIL="${GITEA_LOCAL_ADMIN_EMAIL:-stellaops@gitea.stella-ops.local}"
+GITEA_BOOTSTRAP_SENTINEL="${GITEA_BOOTSTRAP_SENTINEL:-${GITEA_WORK_PATH}/data/.local-admin-ready}"
+
+mkdir -p "${GITEA_WORK_PATH}/git/repositories"
+
+/usr/local/bin/docker-entrypoint.sh "$@" &
+gitea_pid=$!
+
+cleanup() {
+    if kill -0 "${gitea_pid}" 2>/dev/null; then
+        kill "${gitea_pid}" 2>/dev/null || true
+        wait "${gitea_pid}" 2>/dev/null || true
+    fi
+}
+
+trap cleanup INT TERM
+
+ready=0
+attempt=0
+while [ "${attempt}" -lt 60 ]; do
+    if wget -qO- "http://127.0.0.1:${GITEA_HTTP_PORT}/api/v1/version" >/dev/null 2>&1; then
+        ready=1
+        break
+    fi
+
+    if ! kill -0 "${gitea_pid}" 2>/dev/null; then
+        wait "${gitea_pid}"
+        exit 1
+    fi
+
+    attempt=$((attempt + 1))
+    sleep 1
+done
+
+if [ "${ready}" -ne 1 ]; then
+    echo "Gitea did not become ready for local admin bootstrap" >&2
+    wait "${gitea_pid}"
+    exit 1
+fi
+
+existing_admins="$(gitea admin user list --config "${GITEA_CONFIG}" --work-path "${GITEA_WORK_PATH}" --admin | tail -n +2 | awk 'BEGIN { first = 1 } NF { if (!first) printf ","; printf "%s", $2; first = 0 }')"
+if [ -z "${existing_admins}" ]; then
+    gitea admin user create \
+        --config "${GITEA_CONFIG}" \
+        --work-path "${GITEA_WORK_PATH}" \
+        --username "${GITEA_ADMIN_USERNAME}" \
+        --password "${GITEA_ADMIN_PASSWORD}" \
+        --email "${GITEA_ADMIN_EMAIL}" \
+        --admin \
+        --must-change-password=false
+else
+    echo "Gitea admin bootstrap skipped; existing admin users: ${existing_admins}"
+fi
+
+touch "${GITEA_BOOTSTRAP_SENTINEL}"
+
+wait "${gitea_pid}"