Refresh AI agent conversation fixtures for preserved source JSON

[wu-sheng]

Fix AI agent conversation fixtures that still use re-encoded source JSON

The Sessionizer writer now inserts compacted source JSON without re-encoding it, preserving literal characters such as & in raw parts. Regenerate both AI agent conversation fixture sets and their JSON/YAML view examples from the Sessionizer fix, using the original fixed scenario time.

Update the expected file sizes, digests and round filenames to match. Existing assertions still verify the parsed records, file and chain digests, conversation views and ingestion behavior.

• Add a unit test to verify that the fix works. Existing fixture tests cover this refresh; no additional test case is needed.
• Explain briefly why the bug exists and how to fix it.

Validation with JDK 11: SessionFormatsTest, ConversationViewBuilderTest and ConversationFileBuilderTest passed (24 tests, zero failures or errors). Full compile and Javadoc, checkstyle, license headers (zero invalid files) and the changed-Java FQCN audit also passed.

• If this pull request closes/resolves/fixes an existing issue, replace the issue number. Not applicable; no linked issue.
• Update the CHANGES log. Not required; this functionality has never been released.

[Copilot]

🔵 Needs a closer look

Move the changelog entry after the existing Project entries to preserve chronological ordering.

Pull request overview

Refreshes AI agent conversation fixtures to match Sessionizer’s preserved raw source JSON output.

Changes:

• Regenerated transcript and round fixtures with updated sizes and digests.
• Updated JSON/YAML views and fixture filename expectations.
• Refreshed test assertions and added a changelog entry.

File summaries

File	Summary
oap-server/analyzer/ai-agent-conversation/src/test/resources/fixtures/workspace-changes/transcript-20260101T000000.000000000Z-000001.sd	Updated workspace transcript fixture.
oap-server/analyzer/ai-agent-conversation/src/test/resources/fixtures/workspace-changes/r000001-475193a5f44b.sf	Updated workspace round fixture and digest.
oap-server/analyzer/ai-agent-conversation/src/test/resources/fixtures/workspace-changes/asz-view-example.yaml	Updated workspace YAML view.
oap-server/analyzer/ai-agent-conversation/src/test/resources/fixtures/workspace-changes/asz-view-example.json	Updated workspace JSON view.
oap-server/analyzer/ai-agent-conversation/src/test/resources/fixtures/transcript-20260101T000000.000000000Z-000001.sd	Updated conversation transcript fixture.
oap-server/analyzer/ai-agent-conversation/src/test/resources/fixtures/r000001-befb6026a577.sf	Updated round fixture and digest.
oap-server/analyzer/ai-agent-conversation/src/test/resources/fixtures/asz-view-example.yaml	Updated YAML view expectations.
oap-server/analyzer/ai-agent-conversation/src/test/resources/fixtures/asz-view-example.json	Updated JSON view expectations.
oap-server/analyzer/ai-agent-conversation/src/test/java/org/apache/skywalking/oap/server/ai/agent/conversation/SessionFormatsTest.java	Updated size and digest assertions.
oap-server/analyzer/ai-agent-conversation/src/test/java/org/apache/skywalking/oap/server/ai/agent/conversation/Fixtures.java	Updated round filenames.
docs/en/changes/changes.md	Added the fixture refresh changelog entry.

Review details

• Files reviewed: 10/10 changed files
• Comments generated: 0
• Review effort level: Lite

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