v0.34

release: v0.34 — full flag/argument completion for AI CLIs

Ghost-text completion now carries a comprehensive built-in flag set per agent
(claude, codex, gemini, aider, opencode) instead of the handful the signed
manifest's flag_catalog shipped — so `claude --mod` → `--model `, `codex
--sand` → `--sandbox `, etc. The built-in table is merged with (and dedup'd
against) the manifest catalog, so it needs no manifest re-signing and still
honours anything the manifest adds. Command-name completion (v0.33) keys off
the same table, so it works even when the manifest set is empty.

Bumps the six app crates + root pin + WiX to 0.34.0 and the site version chips.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>