chore: add agentic development toolkit

.agents/harnesses.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+# .agents/harnesses.sh — headless harness adapters.
+#
+# ONE function per harness:  harness_<name> <workdir> <promptfile>
+# Each runs the harness NON-INTERACTIVELY inside <workdir>, feeding it the rendered
+# prompt, expected to edit files (and ideally commit). This is the ONLY harness-specific
+# code in the toolkit — tune the exact flags here per tool/version.
+#
+# Autonomy note: these run unattended, so each uses the tool's "just do it" mode
+# (accept edits / full-auto). Only run harnesses you trust on code you can review via PR.
+
+# ---- MUST-HAVE ----
+
+harness_claude() {                      # Claude Code — print mode, auto-accept edits
+  local dir="$1" prompt="$2"
+  ( cd "$dir" && claude -p "$(cat "$prompt")" --permission-mode acceptEdits )
+}
+
+harness_codex() {                       # OpenAI Codex CLI — non-interactive exec, full auto
+  local dir="$1" prompt="$2"
+  ( cd "$dir" && codex exec --full-auto "$(cat "$prompt")" )
+}
+
+harness_opencode() {                    # opencode — non-interactive run
+  local dir="$1" prompt="$2"
+  ( cd "$dir" && opencode run "$(cat "$prompt")" )
+}
+
+# ---- NICE-TO-HAVE (verify the exact invocation for your version before trusting) ----
+
+harness_pi() {                          # pi — CONFIRM headless CLI + flags
+  local dir="$1" prompt="$2"
+  ( cd "$dir" && pi run "$(cat "$prompt")" )        # placeholder — verify
+}
+
+harness_cursor() {                      # Cursor CLI agent — CONFIRM flags
+  local dir="$1" prompt="$2"
+  ( cd "$dir" && cursor-agent -p "$(cat "$prompt")" --force )   # placeholder — verify
+}
+
+# ---- build/typecheck gate (fast, local) ----
+# Returns non-zero on failure. This is a smoke gate — CI runs the full suite. Tune freely.
+run_gate() {
+  local dir="$1"
+  ( cd "$dir" && go build ./... ) || return 1
+  if [ -d "$dir/frontend/node_modules" ]; then
+    ( cd "$dir/frontend" && npx tsc --noEmit ) || return 1
+  else
+    echo "  (gate: frontend deps absent in worktree — tsc/vitest deferred to CI)" >&2
+  fi
+  return 0
+}