chore: remove dead isWindows/binName constants in ripgrep service

[edelauna]

Context

PR #248 replaced getBinPath's hardcoded path probing with import("@vscode/ripgrep"). The two module-level constants that the old implementation used are now unreferenced:

Zoo-Code/src/services/ripgrep/index.ts

Lines 50 to 51 in 06c62c2

	const isWindows = process.platform.startsWith("win")
	const binName = isWindows ? "rg.exe" : "rg"

const isWindows = process.platform.startsWith("win")
const binName = isWindows ? "rg.exe" : "rg"

Task

Delete both constants. No other code references them.

[edelauna]

Closing as invalid — the premise here was that PR #248 removed the path-probe in favour of require("@vscode/ripgrep"), which would have left isWindows/binName unreferenced. PR #248 explicitly kept the path-probe approach and marked the require strategy as out-of-scope (the empirical test on Windows stable 1.121.0 showed the require alias doesn't work during the migration window). binName is still actively used at src/services/ripgrep/index.ts:98 — deleting it would break ripgrep path resolution.