Add 5 pi extensions: pi-subagents, pi-crew, rpiv-pi, pi-interactive-shell, pi-intercom

extensions/pi-subagents/src/custom-agents.ts

@@ -0,0 +1,136 @@
+/**
+ * custom-agents.ts — Load user-defined agents from project (.pi/agents/) and global ($PI_CODING_AGENT_DIR/agents/, default ~/.pi/agent/agents/) locations.
+ */
+
+import { existsSync, readdirSync, readFileSync } from "node:fs";
+import { basename, join } from "node:path";
+import { getAgentDir, parseFrontmatter } from "@mariozechner/pi-coding-agent";
+import { BUILTIN_TOOL_NAMES } from "./agent-types.js";
+import type { AgentConfig, MemoryScope, ThinkingLevel } from "./types.js";
+
+/**
+ * Scan for custom agent .md files from multiple locations.
+ * Discovery hierarchy (higher priority wins):
+ *   1. Project: <cwd>/.pi/agents/*.md
+ *   2. Global:  $PI_CODING_AGENT_DIR/agents/*.md (default: ~/.pi/agent/agents/*.md)
+ *
+ * Project-level agents override global ones with the same name.
+ * Any name is allowed — names matching defaults (e.g. "Explore") override them.
+ */
+export function loadCustomAgents(cwd: string): Map<string, AgentConfig> {
+  const globalDir = join(getAgentDir(), "agents");
+  const projectDir = join(cwd, ".pi", "agents");
+
+  const agents = new Map<string, AgentConfig>();
+  loadFromDir(globalDir, agents, "global");   // lower priority
+  loadFromDir(projectDir, agents, "project");  // higher priority (overwrites)
+  return agents;
+}
+
+/** Load agent configs from a directory into the map. */
+function loadFromDir(dir: string, agents: Map<string, AgentConfig>, source: "project" | "global"): void {
+  if (!existsSync(dir)) return;
+
+  let files: string[];
+  try {
+    files = readdirSync(dir).filter(f => f.endsWith(".md"));
+  } catch {
+    return;
+  }
+
+  for (const file of files) {
+    const name = basename(file, ".md");
+
+    let content: string;
+    try {
+      content = readFileSync(join(dir, file), "utf-8");
+    } catch {
+      continue;
+    }
+
+    const { frontmatter: fm, body } = parseFrontmatter<Record<string, unknown>>(content);
+
+    agents.set(name, {
+      name,
+      displayName: str(fm.display_name),
+      description: str(fm.description) ?? name,
+      builtinToolNames: csvList(fm.tools, BUILTIN_TOOL_NAMES),
+      disallowedTools: csvListOptional(fm.disallowed_tools),
+      extensions: inheritField(fm.extensions ?? fm.inherit_extensions),
+      skills: inheritField(fm.skills ?? fm.inherit_skills),
+      model: str(fm.model),
+      thinking: str(fm.thinking) as ThinkingLevel | undefined,
+      maxTurns: nonNegativeInt(fm.max_turns),
+      systemPrompt: body.trim(),
+      promptMode: fm.prompt_mode === "append" ? "append" : "replace",
+      inheritContext: fm.inherit_context != null ? fm.inherit_context === true : undefined,
+      runInBackground: fm.run_in_background != null ? fm.run_in_background === true : undefined,
+      isolated: fm.isolated != null ? fm.isolated === true : undefined,
+      memory: parseMemory(fm.memory),
+      isolation: fm.isolation === "worktree" ? "worktree" : undefined,
+      enabled: fm.enabled !== false,  // default true; explicitly false disables
+      source,
+    });
+  }
+}
+
+// ---- Field parsers ----
+// All follow the same convention: omitted → default, "none"/empty → nothing, value → exact.
+
+/** Extract a string or undefined. */
+function str(val: unknown): string | undefined {
+  return typeof val === "string" ? val : undefined;
+}
+
+/** Extract a non-negative integer or undefined. 0 means unlimited for max_turns. */
+function nonNegativeInt(val: unknown): number | undefined {
+  return typeof val === "number" && val >= 0 ? val : undefined;
+}
+
+/**
+ * Parse a raw CSV field value into items, or undefined if absent/empty/"none".
+ */
+function parseCsvField(val: unknown): string[] | undefined {
+  if (val === undefined || val === null) return undefined;
+  const s = String(val).trim();
+  if (!s || s === "none") return undefined;
+  const items = s.split(",").map(t => t.trim()).filter(Boolean);
+  return items.length > 0 ? items : undefined;
+}
+
+/**
+ * Parse a comma-separated list field with defaults.
+ * omitted → defaults; "none"/empty → []; csv → listed items.
+ */
+function csvList(val: unknown, defaults: string[]): string[] {
+  if (val === undefined || val === null) return defaults;
+  return parseCsvField(val) ?? [];
+}
+
+/**
+ * Parse an optional comma-separated list field.
+ * omitted → undefined; "none"/empty → undefined; csv → listed items.
+ */
+function csvListOptional(val: unknown): string[] | undefined {
+  return parseCsvField(val);
+}
+
+/**
+ * Parse a memory scope field.
+ * omitted → undefined; "user"/"project"/"local" → MemoryScope.
+ */
+function parseMemory(val: unknown): MemoryScope | undefined {
+  if (val === "user" || val === "project" || val === "local") return val;
+  return undefined;
+}
+
+/**
+ * Parse an inherit field (extensions, skills).
+ * omitted/true → true (inherit all); false/"none"/empty → false; csv → listed names.
+ */
+function inheritField(val: unknown): true | string[] | false {
+  if (val === undefined || val === null || val === true) return true;
+  if (val === false || val === "none") return false;
+  const items = csvList(val, []);
+  return items.length > 0 ? items : false;
+}