Rename .pi to .feynman, rename citation agent to verifier, add website, skills, and docs

- Rename project config dir from .pi/ to .feynman/ (Pi supports this via piConfig.configDir)
- Rename citation agent to verifier across all prompts, agents, skills, and docs
- Add website with homepage and 24 doc pages (Astro + Tailwind)
- Add skills for all workflows (deep-research, lit, review, audit, replicate, compare, draft, autoresearch, watch, jobs, session-log, agentcomputer)
- Add Pi-native prompt frontmatter (args, section, topLevelCli) and read at runtime
- Remove sync-docs generation layer — docs are standalone
- Remove metadata/prompts.mjs and metadata/packages.mjs — not needed at runtime
- Rewrite README and homepage copy
- Add environment selection to /replicate before executing
- Add prompts/delegate.md and AGENTS.md

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

extensions/research-tools/project.ts

@@ -4,13 +4,14 @@ import { dirname, resolve as resolvePath } from "node:path";
 import type { ExtensionAPI } from "@mariozechner/pi-coding-agent";
 import { Type } from "@sinclair/typebox";
 
+import { getExtensionCommandSpec } from "../../metadata/commands.mjs";
 import { renderHtmlPreview, renderPdfPreview, openWithDefaultApp, pathExists, buildProjectAgentsTemplate, buildSessionLogsReadme } from "./preview.js";
 import { formatToolText } from "./shared.js";
 import { searchSessionTranscripts } from "./session-search.js";
 
 export function registerInitCommand(pi: ExtensionAPI): void {
 	pi.registerCommand("init", {
-		description: "Initialize AGENTS.md and session-log folders for a research project.",
+		description: getExtensionCommandSpec("init")?.description ?? "Initialize AGENTS.md and session-log folders for a research project.",
 		handler: async (_args, ctx) => {
 			const agentsPath = resolvePath(ctx.cwd, "AGENTS.md");
 			const notesDir = resolvePath(ctx.cwd, "notes");