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>

src/pi/runtime.ts

@@ -27,8 +27,8 @@ export function resolvePiPaths(appRoot: string) {
 		promisePolyfillPath: resolve(appRoot, "dist", "system", "promise-polyfill.js"),
 		researchToolsPath: resolve(appRoot, "extensions", "research-tools.ts"),
 		promptTemplatePath: resolve(appRoot, "prompts"),
-		systemPromptPath: resolve(appRoot, ".pi", "SYSTEM.md"),
-		piWorkspaceNodeModulesPath: resolve(appRoot, ".pi", "npm", "node_modules"),
+		systemPromptPath: resolve(appRoot, ".feynman", "SYSTEM.md"),
+		piWorkspaceNodeModulesPath: resolve(appRoot, ".feynman", "npm", "node_modules"),
 	};
 }