Rebrand the project from the OpenClaw/Lobster identity to Ironclaw with
a new iron-metallic visual language across CLI and web UI.
## CLI identity
- Rename default CLI name from `openclaw` to `ironclaw` (keep `openclaw`
in KNOWN_CLI_NAMES and regex for backward compat)
- Set process.title to `ironclaw`; update all `[openclaw]` log prefixes
to `[ironclaw]`
- Add `IRONCLAW_*` env var checks (IRONCLAW_HIDE_BANNER,
IRONCLAW_NO_RESPAWN, IRONCLAW_NODE_OPTIONS_READY,
IRONCLAW_TAGLINE_INDEX) with fallback to legacy `OPENCLAW_*` variants
## Animated ASCII banner
- Replace the old lobster block-art with a figlet "ANSI Shadow" font
IRONCLAW ASCII wordmark
- Add `gradient-string` dependency for terminal gradient rendering
- Implement iron shimmer animation: a bright highlight sweeps across the
ASCII art (~2.5 s at 12 fps, 3 full gradient cycles) using a rotating
iron-to-silver color array
- Make `emitCliBanner` async to support the animation; update all call
sites (preaction hook, route, run-main) to await it
- Move banner emission earlier in `runCli()` so it appears for all
invocations (bare command, subcommands, help) with the existing
bannerEmitted guard preventing double-emission
## Iron palette and theme
- Rename LOBSTER_PALETTE → IRON_PALETTE in `src/terminal/palette.ts`
with new cool-steel color tokens (steel grey accent, bright silver
highlight, dark iron dim, steel bl info)
- Re-export LOBSTER_PALETTE as backward-compatible alias
- Update `src/terminal/theme.ts` to import and use IRON_PALETTE
## Tagline cleanup
- Remove lobster-themed, Apple-specific, and platform-joke taglines
- Fix smart-quote and em-dash formatting across remaining taglines
- Add "Holiday taglines" comment grouping for date-gated entries
## Web UI
- Add `framer-motion`, `fuse.js`, and `next-themes` to web app deps
- Add custom font files: Bookerly (regular/bold/italic), SpaceGrotesk
(light/regular/medium/semibold/bold), FoundationTitlesHand
- Update chat panel labels: "OpenClaw Chat" → "Ironclaw Chat",
"Message OpenClaw..." → "Message Ironclaw..."
- Update sidebar header: "OpenClaw Dench" → "Ironclaw"
- CSS formatting cleanup: expand single-lins, add consistent
blank lines between selector blocks, normalize child combinator
spacing (li > ul → li>ul)
