test(bash-lint): track 'Resolve runtime imports (agent prompt)' in REQUIRED_STEP_DISPLAY_NAMES (#662)

The resolver_step() function in src/compile/extensions/ado_script.rs emits a
bash step with displayName 'Resolve runtime imports (agent prompt)'. This step
was already being shellchecked via the runtime-coverage-agent.md fixture, but
it was not listed in REQUIRED_STEP_DISPLAY_NAMES.

Without the guard, removing the fixture's trigger for this generator would
silently drop coverage without any test failure. Adding the name ensures the
harness fails fast if the generator stops being exercised.

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: github-actions[bot]

tests/bash_lint_tests.rs

@@ -109,6 +109,7 @@ const REQUIRED_STEP_DISPLAY_NAMES: &[&str] = &[
     "Evaluate PR filters",                    // src/compile/filter_ir.rs (GateContext::PullRequest)
     "Verify MCP backends",                    // src/compile/common.rs (--debug-pipeline only)
     "Verify pipeline integrity",              // src/compile/common.rs generate_integrity_check
+    "Resolve runtime imports (agent prompt)", // src/compile/extensions/ado_script.rs resolver_step()
 ];
 
 fn ado_aw_binary() -> PathBuf {