refactor: drop 12 runtimes, keep Claude, Codex, OpenCode, Cursor, ZCode, Antigravity

Removes kilo, kimi, kimi-code, copilot, windsurf, augment, trae, qwen, hermes,
cline, codebuddy and pi end to end: capability descriptors, installer branches
and converters (bin/install.js 14.9k -> 11.2k lines), TypeScript converters,
hook surfaces and runtime homes, review lanes qwen/kimi-code, the two pi
migrations, Kimi payload normalization in the hook guards, dead hostBehaviors
vocabulary, launcher home probes, fixtures, runtime-specific tests and the
prose that presented them as supported.

Installer output for the six kept runtimes is byte-identical to before the
prune. The Kimi tool-vocabulary tests in workflow-guard, read-guard and
read-injection-scanner are left in place pending a decision.

hooks/msd-graphify-update.sh

@@ -63,15 +63,6 @@ TOOL_NAME=$(printf '%s\n' "$TOOL_INFO" | sed -n '1p')
 # matches the substring anywhere in the multi-line string.
 COMMAND=$(printf '%s\n' "$TOOL_INFO" | sed -n '2,$p')
 
-# #2304: Kimi CLI registers this hook with matcher 'Shell' and forwards its
-# own tool vocabulary (tool_name 'Shell', possibly module-qualified as
-# kimi_cli.tools.shell:Shell). kimi-cli's Shell.Params names its field
-# `command` (src/kimi_cli/tools/shell/__init__.py), same as Claude's Bash,
-# so only the tool name needs normalization — the shell counterpart of the
-# KIMI_TOOL_NAMES map inlined in the JS guards.
-TOOL_NAME="${TOOL_NAME##*:}"
-if [ "$TOOL_NAME" = "Shell" ]; then TOOL_NAME="Bash"; fi
-
 [ "$TOOL_NAME" = "Bash" ] || exit 0
 
 # Gate 2 — HEAD-advancing git op (shell-direct or exact `msd-tools query commit`)