Fix test expectation for fs.readFile call count in agent-service.test.ts

[Copilot]

The test "should reuse existing session if already started" expected fs.readFile to be called once, but startConversation actually calls it twice on first invocation: once for loadSession() and once for loadMetadata().

Changes

• Updated test expectation from toHaveBeenCalledTimes(1) to toHaveBeenCalledTimes(2)
• Added comment clarifying the call sequence

// First call reads session file and metadata file (2 calls)
// Second call should reuse in-memory session (no additional calls)
expect(fs.readFile).toHaveBeenCalledTimes(2);

Original prompt

can you fix the build tests and Test Suite / test (pull_request)Failing after 1m

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[Copilot]

Pull request overview

This PR fixes a failing test by correcting the expected call count for fs.readFile in the "should reuse existing session if already started" test case. The test was previously expecting 1 call but actually receives 2 calls because startConversation invokes both loadSession() and loadMetadata() on its first invocation.

• Updated the assertion from toHaveBeenCalledTimes(1) to toHaveBeenCalledTimes(2) to reflect actual behavior
• Added explanatory comment to clarify why 2 calls are expected

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[Copilot]

The comment is slightly ambiguous. Consider clarifying that "First call" refers to the first invocation of startConversation (not the first readFile call). For example: "First startConversation invocation reads session file and metadata file (2 calls). Second invocation should reuse in-memory session (no additional calls)"

Suggested change

	// First call reads session file and metadata file (2 calls)
	// Second call should reuse in-memory session (no additional calls)
	// First startConversation invocation reads session file and metadata file (2 calls)
	// Second startConversation invocation should reuse in-memory session (no additional calls)