*: update kvproto to apiv3

[disksing]

What problem does this PR solve?

The kvproto APIV3 branch moves keyspace-related protobuf fields into oneofs, so the current client code no longer compiles against the latest definitions.

What changed?

• Update kvproto to fd32127adca58438f6b05c869951182bbdd6041c in the root, integration-test, and example modules.
• Update the PD client dependency to an APIV3-compatible revision.
• Adapt API codec, region location, TiKV RPC, and tests to generated oneof getters and wrappers.

Tests

• go test -tags=intest ./...

Summary by CodeRabbit

• Compatibility
  • Updated keyspace-aware request/response handling to align with newer protobuf context/task meta shapes across MPP and compaction flows, including transaction and RPC context propagation.
  • Improved consistency by reading keyspace identifiers via the standard accessors throughout GC-related and test utilities.
• Maintenance
  • Bumped the Go toolchain to 1.25.10 across examples and integration tooling.
  • Refreshed indirect dependencies, including gRPC/protobuf and related client libraries, to newer revisions.

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Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: ff35e131-1144-49a7-95b9-3f452a4d222c

📥 Commits

Reviewing files that changed from the base of the PR and between 96df3b6 and cfc77b3.

⛔ Files ignored due to path filters (2)

• go.sum is excluded by !**/*.sum
• integration_tests/go.sum is excluded by !**/*.sum

📒 Files selected for processing (10)

• examples/gcworker/go.mod
• examples/rawkv/go.mod
• examples/txnkv/1pc_txn/go.mod
• examples/txnkv/async_commit/go.mod
• examples/txnkv/delete_range/go.mod
• examples/txnkv/go.mod
• examples/txnkv/pessimistic_txn/go.mod
• examples/txnkv/unsafedestoryrange/go.mod
• go.mod
• integration_tests/go.mod

📝 Walkthrough

Walkthrough

Updates Go modules to Go 1.25.10 and newer dependency revisions, while migrating keyspace protobuf handling from direct fields to wrapper types and generated accessors across codecs, safe-point logic, integration tests, and test fixtures.

Changes

Keyspace compatibility and module updates

Layer / File(s)	Summary
Protobuf keyspace request handling internal/apicodec/codec.go, internal/apicodec/codec_v2_test.go, tikvrpc/tikvrpc_test.go	API context, compact, and MPP request construction and tests use wrapper-based keyspace fields and generated getters.
Keyspace accessor propagation internal/apicodec/codec_v2.go, internal/locate/pd_codec.go, tikv/*, integration_tests/gc_test.go	Keyspace ID retrieval in codecs, PD handling, safe-point loading, integration tests, and test utilities uses GetId().
Go and dependency version refresh go.mod, integration_tests/go.mod, examples/**/go.mod	Go directives move to 1.25.10 and kvproto, PD client, TiDB, client-go, gRPC, and protobuf dependencies are updated.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Possibly related issues

• tikv/pd#11025: Updates kvproto to APIV3 and migrates keyspace call sites to generated oneof APIs, matching this PR’s protobuf changes.
• tikv/tikv#19856: Upgrades kvproto and adds compatibility changes for its updated protobuf API fields.

Possibly related PRs

• tikv/client-go#1848: Modifies setAPICtx keyspace/API wiring in the same codec path.
• tikv/client-go#1935: Overlaps on PD client and kvproto dependency updates.
• tikv/client-go#1982: Updates module files to Go 1.25.10.

Suggested reviewers: bufferflies, cfzjywxk, zyguan

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: upgrading kvproto for APIV3 compatibility.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch apiv3-update-proto

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[coderabbitai]

🧹 Nitpick comments (1)

internal/apicodec/codec_v2_test.go (1)

887-887: 📐 Maintainability & Code Quality | 🔵 Trivial | 💤 Low value

Swap arguments to match testify's expected vs. actual convention.

In testify/suite, the Equal method expects arguments in the order (expected, actual). Swapping them ensures that any failure messages will report the expected and actual values correctly instead of inversely.

♻️ Proposed refactor

-	suite.Equal(task.Meta.GetKeyspaceId(), testKeyspaceID)
+	suite.Equal(testKeyspaceID, task.Meta.GetKeyspaceId())

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@internal/apicodec/codec_v2_test.go` at line 887, Update the Equal assertion
in the relevant test to pass testKeyspaceID as the expected value and
task.Meta.GetKeyspaceId() as the actual value, preserving the existing
comparison.

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Nitpick comments:
In `@internal/apicodec/codec_v2_test.go`:
- Line 887: Update the Equal assertion in the relevant test to pass
testKeyspaceID as the expected value and task.Meta.GetKeyspaceId() as the actual
value, preserving the existing comparison.

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 028004a3-d722-4842-84e1-09af2e9ec1ee

📥 Commits

Reviewing files that changed from the base of the PR and between 3d4b3ea and 1abe0db.

⛔ Files ignored due to path filters (2)

• go.sum is excluded by !**/*.sum
• integration_tests/go.sum is excluded by !**/*.sum

📒 Files selected for processing (17)

• examples/gcworker/go.mod
• examples/rawkv/go.mod
• examples/txnkv/1pc_txn/go.mod
• examples/txnkv/async_commit/go.mod
• examples/txnkv/delete_range/go.mod
• examples/txnkv/go.mod
• examples/txnkv/pessimistic_txn/go.mod
• examples/txnkv/unsafedestoryrange/go.mod
• go.mod
• integration_tests/go.mod
• internal/apicodec/codec.go
• internal/apicodec/codec_v2.go
• internal/apicodec/codec_v2_test.go
• internal/locate/pd_codec.go
• tikv/compatible_txn_safe_point_loader.go
• tikv/test_util.go
• tikvrpc/tikvrpc_test.go

[disksing]

Addressed the CodeRabbit nit in 901d142 by using the expected/actual argument order. This update also moves integration_tests to the APIV3-compatible TiDB revision and fixes the remaining KeyspaceMeta getter; the full integration test module now compiles.