Replace supervisor with agentrun worker service

Move agent-run orchestration from the legacy supervisor path into the new
agentrun worker/service package and wire it through coredata, server,
policies, and GraphQL resolvers.

This consolidates run lifecycle handling around lease-aware workers and
aligns API surface with the new agent-run domain model so reviewers can
follow one coherent execution path.

Signed-off-by: Bryan Frimin <bryan@probo.com>

pkg/agentrun/internal_test.go

@@ -0,0 +1,111 @@
+// Copyright (c) 2026 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package agentrun
+
+import (
+	"errors"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestSanitizeError(t *testing.T) {
+	t.Parallel()
+
+	t.Run(
+		"short message unchanged",
+		func(t *testing.T) {
+			t.Parallel()
+
+			err := errors.New("short")
+			assert.Equal(t, "short", sanitizeError(err))
+		},
+	)
+
+	t.Run(
+		"boundary length unchanged",
+		func(t *testing.T) {
+			t.Parallel()
+
+			msg := strings.Repeat("a", errorMessageMaxLen)
+			assert.Equal(t, msg, sanitizeError(errors.New(msg)))
+		},
+	)
+
+	t.Run(
+		"long utf8 message is rune safe and suffixed",
+		func(t *testing.T) {
+			t.Parallel()
+
+			msg := strings.Repeat("é", errorMessageMaxLen)
+			sanitized := sanitizeError(errors.New(msg))
+
+			assert.True(t, strings.HasSuffix(sanitized, "…"))
+			assert.True(t, len(sanitized) <= errorMessageMaxLen+len("…"))
+			assert.True(t, strings.HasPrefix(msg, strings.TrimSuffix(sanitized, "…")))
+		},
+	)
+}
+
+func TestWorkerOptions(t *testing.T) {
+	t.Parallel()
+
+	t.Run(
+		"interval updates only when positive",
+		func(t *testing.T) {
+			t.Parallel()
+
+			cfg := workerConfig{interval: 3 * time.Second}
+
+			WithWorkerInterval(0)(&cfg)
+			assert.Equal(t, 3*time.Second, cfg.interval)
+
+			WithWorkerInterval(7 * time.Second)(&cfg)
+			assert.Equal(t, 7*time.Second, cfg.interval)
+		},
+	)
+
+	t.Run(
+		"lease duration updates only when positive",
+		func(t *testing.T) {
+			t.Parallel()
+
+			cfg := workerConfig{leaseDuration: 5 * time.Second}
+
+			WithWorkerLeaseDuration(-1)(&cfg)
+			assert.Equal(t, 5*time.Second, cfg.leaseDuration)
+
+			WithWorkerLeaseDuration(12 * time.Second)(&cfg)
+			assert.Equal(t, 12*time.Second, cfg.leaseDuration)
+		},
+	)
+
+	t.Run(
+		"max concurrency updates only when positive",
+		func(t *testing.T) {
+			t.Parallel()
+
+			cfg := workerConfig{maxConcurrency: 2}
+
+			WithWorkerMaxConcurrency(0)(&cfg)
+			assert.Equal(t, 2, cfg.maxConcurrency)
+
+			WithWorkerMaxConcurrency(9)(&cfg)
+			assert.Equal(t, 9, cfg.maxConcurrency)
+		},
+	)
+}