feat(preflight): add exploit-readiness probe and --validate-auth mode, and refresh suggested models (#476)

* feat(preflight): gate scans on an exploit-workload readiness probe

* feat: add --validate-auth to run authentication validation only

* feat: refuse reusing an auth-validation workspace for a scan

* chore: refresh suggested model IDs (Grok 4.7, OpenAI gpt-6-sol, Claude 5)

* fix(preflight): make the exploit-readiness probe trip the cyber safeguard reliably

* chore(preflight): update the exploit-readiness probe prompt

* feat: add --validate-model to run the preflight model checks only

* feat(cli): name cyber-access and app-login steps in the start loader

* feat(cli): refine start loader — skip app-login step when following, annotate preflight label

* feat(status): show Preflight and Cyber access verification rows for gated providers

* chore(preflight): suggest a fallback model in cyber-access remediation hints

* chore(preflight): drop env-var syntax from cyber-access fallback hints

* fix(preflight): separate finding heading from Target line in readiness probe

* refactor(preflight): rename exploit-readiness probe to cyber access verification

* fix(preflight): re-join finding heading with Target line in readiness probe

Reverts the heading/Target split from 22d84f2, gluing each finding's
heading back onto its Target line in the cyber-access probe's user
content.

* feat(validation): show a Checks summary in the validation log

* fix(cli): say a validation run failed, not that it could not start

* docs(ai-providers): replace broken Pi subscription link with /login steps

* feat(preflight): gate the openai-codex subscription on cyber access

apps/cli/src/index.ts

@@ -189,6 +189,8 @@ interface ParsedStartArgs {
   pipelineTesting: boolean;
   keepContainer: boolean;
   follow: boolean;
+  authOnly: boolean;
+  validateModel: boolean;
 }
 
 function parseStartArgs(argv: string[]): ParsedStartArgs {
@@ -205,6 +207,8 @@ function parseStartArgs(argv: string[]): ParsedStartArgs {
       pipelineTesting: ['--pipeline-testing'],
       keepContainer: ['--keep-container'],
       follow: ['-f', '--follow'],
+      authOnly: ['--validate-auth'],
+      validateModel: ['--validate-model'],
     },
   });
 
@@ -220,12 +224,25 @@ function parseStartArgs(argv: string[]): ParsedStartArgs {
     failUsage(`invalid --url: ${url}`);
   }
 
+  if (flags.authOnly && flags.validateModel) {
+    failUsage('--validate-auth and --validate-model cannot be combined; run one validation at a time');
+  }
+
+  if (flags.authOnly && !values.config) {
+    failUsage(
+      '--validate-auth needs a config file with an authentication block',
+      `Usage: ${commandPrefix()} start -u <url> -r <path> -c <config.yaml> --validate-auth`,
+    );
+  }
+
   return {
     url,
     repo,
     pipelineTesting: !!flags.pipelineTesting,
     keepContainer: !!flags.keepContainer,
     follow: !!flags.follow,
+    authOnly: !!flags.authOnly,
+    validateModel: !!flags.validateModel,
     ...(values.config && { config: values.config }),
     ...(values.modelsConfig && { modelsConfig: values.modelsConfig }),
     ...(values.workspace && { workspace: values.workspace }),