scripts: add SessionStart git/Forgejo digest check

scripts/session-git-check.sh

@@ -0,0 +1,58 @@
+#!/usr/bin/env bash
+# SessionStart digest: fetch remote, report incoming commits + open Forgejo
+# issues/PRs. Emits a Claude hook JSON blob on stdout (additionalContext) so
+# Claude can surface anything actionable at the top of the session.
+# Always exits 0 and always prints valid JSON — must never block a session.
+
+set -o pipefail
+cd "$(dirname "$0")/.." 2>/dev/null || exit 0
+
+digest=""
+add() { digest+="$1"$'\n'; }
+
+# --- Remote fetch + incoming/outgoing commit comparison ------------------
+if git rev-parse --git-dir >/dev/null 2>&1; then
+  git fetch --all --quiet 2>/dev/null
+  upstream=$(git rev-parse --abbrev-ref --symbolic-full-name '@{u}' 2>/dev/null)
+  if [ -n "$upstream" ]; then
+    incoming=$(git log --oneline "HEAD..$upstream" 2>/dev/null)
+    outgoing=$(git log --oneline "$upstream..HEAD" 2>/dev/null)
+    if [ -n "$incoming" ]; then
+      add "INCOMING commits on $upstream (you are behind — pull to get them):"
+      while IFS= read -r l; do add "  $l"; done <<< "$incoming"
+    else
+      add "Up to date with $upstream (no incoming commits)."
+    fi
+    [ -n "$outgoing" ] && add "You have $(wc -l <<< "$outgoing") local commit(s) not yet pushed."
+  fi
+fi
+
+# --- Forgejo open issues + PRs -------------------------------------------
+remote_url=$(git remote get-url origin 2>/dev/null)
+if [[ "$remote_url" =~ ^https?://([^/]+)/([^/]+)/([^/.]+) ]]; then
+  host="${BASH_REMATCH[1]}"; owner="${BASH_REMATCH[2]}"; repo="${BASH_REMATCH[3]}"
+  cred=$(grep -m1 "$host" "$HOME/.git-credentials" 2>/dev/null)
+  tok=$(sed -E 's#https?://([^@]+)@.*#\1#' <<< "$cred")
+  api="https://$host/api/v1/repos/$owner/$repo/issues"
+  parse='import sys,json
+try: d=json.load(sys.stdin)
+except: sys.exit(0)
+for i in d: print("  #%d %s (by %s)"%(i["number"],i["title"],i["user"]["login"]))'
+  if [ -n "$tok" ]; then
+    issues=$(curl -sf --max-time 8 -u "$tok" "$api?state=open&type=issues" 2>/dev/null | python3 -c "$parse" 2>/dev/null)
+    prs=$(curl -sf --max-time 8 -u "$tok" "$api?state=open&type=pulls" 2>/dev/null | python3 -c "$parse" 2>/dev/null)
+    if [ -n "$issues" ]; then add "OPEN ISSUES:"; add "$issues"; else add "No open issues."; fi
+    if [ -n "$prs" ]; then add "OPEN PULL REQUESTS:"; add "$prs"; else add "No open PRs."; fi
+  fi
+fi
+
+# --- Emit hook JSON ------------------------------------------------------
+ctx="[Session start — repo/remote status]
+$digest
+If there are INCOMING commits or any open issues/PRs, briefly tell the user at the start of your first reply. If everything is up to date with no open items, do not mention this."
+
+python3 - "$ctx" <<'PY'
+import json,sys
+print(json.dumps({"hookSpecificOutput":{"hookEventName":"SessionStart","additionalContext":sys.argv[1]},"suppressOutput":True}))
+PY
+exit 0