bootstrap: enable 25.4 mixed-cluster logic tests

This change enables mixed-cluster logic tests for version 25.4 by adding
bootstrap data from release-25.4 and configuring the local-mixed-25.4 test
configuration.

The bootstrap data was obtained by running (on release-25.4 branch):
  ./dev build sql-bootstrap-data && bin/sql-bootstrap-data

Changes include:
- Added bootstrap data files (25_4_system.keys/sha256, 25_4_tenant.keys/sha256)
- Updated initial_values.go with V25_4 mapping
- Updated BUILD.bazel files with new bootstrap data embedsrcs
- Added local-mixed-25.4 logictest configuration
- Generated test files for local-mixed-25.4 config
- Updated logictests with skipif directives for local-mixed-25.4
- Updated CLAUDE.md runbook with note about cockroach-go-testserver pitfall
- Added M.2 Claude Prompt to README.md

Note: cockroach-go-testserver-25.4 configuration is NOT included in M.2.
It will be added in M.3 after the first RC binary is published and added
to REPOSITORIES.bzl. This was incorrectly included in the initial version
of this commit and has been removed.

Part of M.2 "Enable mixed-cluster logic tests" checklist.

Release note: None
Epic: None

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: celiala

pkg/BUILD.bazel

@@ -63,6 +63,7 @@ ALL_TESTS = [
     "//pkg/ccl/logictestccl/tests/local-legacy-schema-changer:local-legacy-schema-changer_test",
     "//pkg/ccl/logictestccl/tests/local-mixed-25.2:local-mixed-25_2_test",
     "//pkg/ccl/logictestccl/tests/local-mixed-25.3:local-mixed-25_3_test",
+    "//pkg/ccl/logictestccl/tests/local-mixed-25.4:local-mixed-25_4_test",
     "//pkg/ccl/logictestccl/tests/local-prepared:local-prepared_test",
     "//pkg/ccl/logictestccl/tests/local-read-committed:local-read-committed_test",
     "//pkg/ccl/logictestccl/tests/local-repeatable-read:local-repeatable-read_test",
@@ -523,6 +524,7 @@ ALL_TESTS = [
     "//pkg/sql/logictest/tests/local-legacy-schema-changer:local-legacy-schema-changer_test",
     "//pkg/sql/logictest/tests/local-mixed-25.2:local-mixed-25_2_test",
     "//pkg/sql/logictest/tests/local-mixed-25.3:local-mixed-25_3_test",
+    "//pkg/sql/logictest/tests/local-mixed-25.4:local-mixed-25_4_test",
     "//pkg/sql/logictest/tests/local-prepared:local-prepared_test",
     "//pkg/sql/logictest/tests/local-vec-off:local-vec-off_test",
     "//pkg/sql/logictest/tests/local:local_test",
@@ -644,6 +646,7 @@ ALL_TESTS = [
     "//pkg/sql/sqlitelogictest/tests/local-legacy-schema-changer:local-legacy-schema-changer_test",
     "//pkg/sql/sqlitelogictest/tests/local-mixed-25.2:local-mixed-25_2_test",
     "//pkg/sql/sqlitelogictest/tests/local-mixed-25.3:local-mixed-25_3_test",
+    "//pkg/sql/sqlitelogictest/tests/local-mixed-25.4:local-mixed-25_4_test",
     "//pkg/sql/sqlitelogictest/tests/local-prepared:local-prepared_test",
     "//pkg/sql/sqlitelogictest/tests/local-read-committed:local-read-committed_test",
     "//pkg/sql/sqlitelogictest/tests/local-repeatable-read:local-repeatable-read_test",
@@ -996,6 +999,7 @@ GO_TARGETS = [
     "//pkg/ccl/logictestccl/tests/local-legacy-schema-changer:local-legacy-schema-changer_test",
     "//pkg/ccl/logictestccl/tests/local-mixed-25.2:local-mixed-25_2_test",
     "//pkg/ccl/logictestccl/tests/local-mixed-25.3:local-mixed-25_3_test",
+    "//pkg/ccl/logictestccl/tests/local-mixed-25.4:local-mixed-25_4_test",
     "//pkg/ccl/logictestccl/tests/local-prepared:local-prepared_test",
     "//pkg/ccl/logictestccl/tests/local-read-committed:local-read-committed_test",
     "//pkg/ccl/logictestccl/tests/local-repeatable-read:local-repeatable-read_test",
@@ -2090,6 +2094,7 @@ GO_TARGETS = [
     "//pkg/sql/logictest/tests/local-legacy-schema-changer:local-legacy-schema-changer_test",
     "//pkg/sql/logictest/tests/local-mixed-25.2:local-mixed-25_2_test",
     "//pkg/sql/logictest/tests/local-mixed-25.3:local-mixed-25_3_test",
+    "//pkg/sql/logictest/tests/local-mixed-25.4:local-mixed-25_4_test",
     "//pkg/sql/logictest/tests/local-prepared:local-prepared_test",
     "//pkg/sql/logictest/tests/local-vec-off:local-vec-off_test",
     "//pkg/sql/logictest/tests/local:local_test",
@@ -2373,6 +2378,7 @@ GO_TARGETS = [
     "//pkg/sql/sqlitelogictest/tests/local-legacy-schema-changer:local-legacy-schema-changer_test",
     "//pkg/sql/sqlitelogictest/tests/local-mixed-25.2:local-mixed-25_2_test",
     "//pkg/sql/sqlitelogictest/tests/local-mixed-25.3:local-mixed-25_3_test",
+    "//pkg/sql/sqlitelogictest/tests/local-mixed-25.4:local-mixed-25_4_test",
     "//pkg/sql/sqlitelogictest/tests/local-prepared:local-prepared_test",
     "//pkg/sql/sqlitelogictest/tests/local-read-committed:local-read-committed_test",
     "//pkg/sql/sqlitelogictest/tests/local-repeatable-read:local-repeatable-read_test",

pkg/ccl/logictestccl/tests/local-mixed-25.4/BUILD.bazel

@@ -0,0 +1,28 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_test")
+
+go_test(
+    name = "local-mixed-25_4_test",
+    size = "enormous",
+    srcs = ["generated_test.go"],
+    data = [
+        "//c-deps:libgeos",  # keep
+        "//pkg/ccl/logictestccl:testdata",  # keep
+    ],
+    exec_properties = {"test.Pool": "large"},
+    shard_count = 36,
+    tags = ["cpu:1"],
+    deps = [
+        "//pkg/base",
+        "//pkg/build/bazel",
+        "//pkg/ccl",
+        "//pkg/security/securityassets",
+        "//pkg/security/securitytest",
+        "//pkg/server",
+        "//pkg/sql/logictest",
+        "//pkg/testutils/serverutils",
+        "//pkg/testutils/skip",
+        "//pkg/testutils/testcluster",
+        "//pkg/util/leaktest",
+        "//pkg/util/randutil",
+    ],
+)