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>

.feynman/settings.json

@@ -0,0 +1,20 @@
+{
+  "packages": [
+    "npm:pi-subagents",
+    "npm:pi-btw",
+    "npm:pi-docparser",
+    "npm:pi-web-access",
+    "npm:pi-markdown-preview",
+    "npm:@walterra/pi-charts",
+    "npm:pi-generative-ui",
+    "npm:pi-mermaid",
+    "npm:@aliou/pi-processes",
+    "npm:pi-zotero",
+    "npm:@kaiserlich-dev/pi-session-search",
+    "npm:pi-schedule-prompt",
+    "npm:@samfp/pi-memory",
+    "npm:@tmustier/pi-ralph-wiggum"
+  ],
+  "quietStartup": true,
+  "collapseChangelog": true
+}