feat(integrations): add omp support (#3107)

* feat(integrations): add omp support

* Update updated_at timestamp

* refactor(integrations): delegate omp build_exec_args to base, register in issue templates

Inherit MarkdownIntegration.build_exec_args so omp picks up shared CLI
contract changes (requires_cli gating, extra-args ordering, --model
handling) automatically; only specialize the --mode json flag.

Also add Oh My Pi / omp to the issue-template agent lists so
test_issue_template_agent_lists_match_runtime_integrations passes.

* fix(integrations): use --print + positional prompt for omp argv

OMP's CLI parser treats `-p`/`--print` as a boolean (one-shot mode)
and consumes the prompt as a positional message; the previous
inherited `-p <prompt>` shape worked by accident only because `-p`
ignores its next token. Build the argv explicitly with flags first
and the prompt as a trailing positional, matching upstream args.ts.

tests/integrations/test_integration_omp.py

@@ -0,0 +1,31 @@
+"""Tests for OmpIntegration."""
+
+from specify_cli.integrations import get_integration
+
+from .test_integration_base_markdown import MarkdownIntegrationTests
+
+
+class TestOmpIntegration(MarkdownIntegrationTests):
+    KEY = "omp"
+    FOLDER = ".omp/"
+    COMMANDS_SUBDIR = "commands"
+    REGISTRAR_DIR = ".omp/commands"
+    CONTEXT_FILE = "AGENTS.md"
+
+    def test_build_exec_args_uses_omp_json_mode(self):
+        i = get_integration(self.KEY)
+
+        args = i.build_exec_args(
+            "/speckit.specify Build auth",
+            model="gpt-5",
+        )
+
+        assert args == [
+            "omp",
+            "--print",
+            "--model",
+            "gpt-5",
+            "--mode",
+            "json",
+            "/speckit.specify Build auth",
+        ]

tests/test_agent_config_consistency.py

@@ -34,6 +34,7 @@ ISSUE_TEMPLATE_AGENT_KEYS = [
     "kiro-cli",
     "lingma",
     "vibe",
+    "omp",
     "opencode",
     "pi",
     "qodercli",