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>

AGENTS.md

@@ -0,0 +1,53 @@
+# Agents
+
+`AGENTS.md` is the repo-level contract for agents working in this repository.
+
+Pi subagent behavior does **not** live here. The source of truth for bundled Pi subagents is `.feynman/agents/*.md`, which the runtime syncs into the Pi agent directory. If you need to change how `researcher`, `reviewer`, `writer`, or `verifier` behave, edit the corresponding file in `.feynman/agents/` instead of duplicating those prompts here.
+
+## Pi subagents
+
+Feynman ships four bundled research subagents:
+
+- `researcher`
+- `reviewer`
+- `writer`
+- `verifier`
+
+They are defined in `.feynman/agents/` and invoked via the Pi `subagent` tool.
+
+## What belongs here
+
+Keep this file focused on cross-agent repo conventions:
+
+- output locations and file naming expectations
+- provenance and verification requirements
+- handoff rules between the lead agent and subagents
+- remote delegation conventions
+
+Do **not** restate per-agent prompt text here unless there is a repo-wide constraint that applies to all agents.
+
+## Output conventions
+
+- Research outputs go in `outputs/`.
+- Paper-style drafts go in `papers/`.
+- Session logs go in `notes/`.
+- Plan artifacts for long-running workflows go in `outputs/.plans/`.
+- Intermediate research artifacts such as `research-web.md` and `research-papers.md` are written to disk by subagents and read by the lead agent. They are not returned inline unless the user explicitly asks for them.
+
+## Provenance and verification
+
+- Every output from `/deepresearch` and `/lit` must include a `.provenance.md` sidecar.
+- Provenance sidecars should record source accounting and verification status.
+- Source verification and citation cleanup belong in the `verifier` stage, not in ad hoc edits after delivery.
+- Verification passes should happen before delivery when the workflow calls for them.
+
+## Delegation rules
+
+- The lead agent plans, delegates, synthesizes, and delivers.
+- Use subagents when the work is meaningfully decomposable; do not spawn them for trivial work.
+- Prefer file-based handoffs over dumping large intermediate results back into parent context.
+- When delegating to remote machines, retrieve final artifacts back into the local workspace and save them locally.
+
+## Remote delegation
+
+Feynman can delegate tasks to remote cloud machines via the `computer-fleet` and `computer-acp` skills. Load those skills on demand for CLI usage, session management, ACP bridging, and file retrieval.