Landing + agent doc pass: clearer copy, live params, key roles

[LandynDev]

Summary

Sweeps the landing page, swap CTA, agents page, and the agent quickstart bundle (AgentMarkdown.ts + mirrored public/llms.txt) based on a feedback pass — partly direct copy edits, partly fixes surfaced by an agent that ran the quickstart and tripped on the gaps.

Landing / UI

• MetricsStrip — drop Volume (TAO), render volume with τ unit on the value.
• HowItWorks — Allways miners publish live rates; Supporting miner has collateral locked.
• ValueProps — tighten Best rate; rename Subnet-native → Native settlement with a no-bridges / no-IOUs body.
• AgentTeaser — any LLM → any agent harness.
• Footer / links — remove the dead Status link (and the unused LINKS.status).
• SwapPage — link "CLI" to the docs swap-guide alongside the agent bundle.
• AgentsPage — keep the punchy intro, add one sentence on agent-native swapping.

Agent quickstart (AgentMarkdown.ts + public/llms.txt)

• Code is law — review everything, not a curated subset.
• Actors — miners post collateral and rates before any swap exists; users pick a pair/rate which resolves to a miner.
• Reservation lifecycle now explicit (reserve → confirm → initiate), with alw view reservation and the /reservations/by-source/{address} endpoint called out for live tracking.
• Replaced hardcoded reservation TTL / fulfillment timeout copy with pointers to alw view contract + GET /protocol/constants (and a field-by-field gloss).
• New Wallet roles & funding subsection — coldkey vs hotkey, who signs what, per-direction pre-flight funding checklist. Step 3 of the swap flow now says coldkey signs TAO source; user-side swaps don't need a hotkey at all.
• Added a TAO → BTC flag-driven example (--receive-address is a BTC address); spelled out every flag's meaning inline.
• alw swap quote example output included so models know which line is the post-fee receive amount.
• Verify-install renamed Verify the install + scope the system; alw view contract / alw view validators added; empty-miner diagnosis pointer included.
• Mainnet contract marked TBD (not yet deployed); testnet contract corrected to 5FwPheGT96iBFZ6JkwyDhDH4GcVjafWxAtSsSSq26UiYyTfg, full testnet .env block included.
• lightweight mode now described as Esplora-compatible (Blockstream primary, Mempool.space fallback).
• .env file location pinned to CWD where alw is invoked.
• Misc copy: "safe default" → "intended to be safe"; sender verification reads "the wallet tied to your reservation".

Mirroring

public/llms.txt is regenerated from AGENT_MARKDOWN so /llms.txt matches the page exactly.

Test plan

• npm run build passes (verified locally)
• Landing page renders the τ unit and updated cards correctly in dev
• Agents page intro renders the new line under the existing punchy sentence
• /agents bundle copy matches /llms.txt (diff in browser)
• Swap page CTA opens the right docs page