fix(cli): honor NO_COLOR/--no-color and go plain when stdout is piped (#1306)

List commands (status, query, callers, callees, impact, files) embedded
ANSI color codes even when stdout was a pipe, and NO_COLOR had no effect.
One switch now decides color for all codegraph-authored output:
--no-color > --color > NO_COLOR > FORCE_COLOR > stdout TTY > CI.

Piped init/index/sync also stop emitting shimmer animation frames
(\r + erase-line rewrites) and print one plain line per phase instead;
a TTY with NO_COLOR keeps the animation but drops the color codes.
The detection mirrors picocolors' so @clack frames and our own lines
agree within a run.

Fixes #1281

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

src/upgrade/index.ts

@@ -28,6 +28,7 @@ import * as fs from 'fs';
 import * as path from 'path';
 import * as https from 'https';
 import { spawnSync } from 'child_process';
+import { ansiColorsEnabled } from '../ui/color';
 
 export const REPO = 'colbymchenry/codegraph';
 export const NPM_PACKAGE = '@colbymchenry/codegraph';
@@ -305,12 +306,14 @@ export interface UpgradeDeps {
   offerBetaSignup?: () => Promise<void>;
 }
 
+// Colors off when piped / NO_COLOR / --no-color (#1281).
+const useColor = ansiColorsEnabled();
 const c = {
-  bold: (s: string) => `\x1b[1m${s}\x1b[0m`,
-  dim: (s: string) => `\x1b[2m${s}\x1b[0m`,
-  green: (s: string) => `\x1b[32m${s}\x1b[0m`,
-  yellow: (s: string) => `\x1b[33m${s}\x1b[0m`,
-  cyan: (s: string) => `\x1b[36m${s}\x1b[0m`,
+  bold: (s: string) => (useColor ? `\x1b[1m${s}\x1b[0m` : s),
+  dim: (s: string) => (useColor ? `\x1b[2m${s}\x1b[0m` : s),
+  green: (s: string) => (useColor ? `\x1b[32m${s}\x1b[0m` : s),
+  yellow: (s: string) => (useColor ? `\x1b[33m${s}\x1b[0m` : s),
+  cyan: (s: string) => (useColor ? `\x1b[36m${s}\x1b[0m` : s),
 };
 
 /** The honest, additive re-index reminder shown after a successful upgrade. */