feat(telemetry): implement session tracking and telemetry server

[RealKai42]

Summary

• emit a session_started telemetry event once per session with raw Wire client info as event properties
• stop attaching client name/version to telemetry context while preserving UI mode context
• add a local telemetry debug server script and focused telemetry/Wire tests

Test Plan

• uv run pytest tests/telemetry tests/core/test_wire_server_steer.py::test_wire_client_info_emits_session_started
• uv run ruff check src/kimi_cli/telemetry/__init__.py src/kimi_cli/telemetry/sink.py src/kimi_cli/app.py src/kimi_cli/wire/server.py src/kimi_cli/soul/agent.py tests/telemetry/test_instrumentation.py tests/telemetry/test_telemetry.py tests/telemetry/test_crash.py tests/core/test_wire_server_steer.py
• uv run ruff format --check src/kimi_cli/telemetry/__init__.py src/kimi_cli/telemetry/sink.py src/kimi_cli/app.py src/kimi_cli/wire/server.py src/kimi_cli/soul/agent.py tests/telemetry/test_instrumentation.py tests/telemetry/test_telemetry.py tests/telemetry/test_crash.py tests/core/test_wire_server_steer.py
• uv run pyright src/kimi_cli/telemetry src/kimi_cli/wire/server.py src/kimi_cli/app.py src/kimi_cli/soul/agent.py

---

[Copilot]

Pull request overview

Implements per-session telemetry attribution by emitting a single session_started event per session (with raw Wire client info as properties), removing client name/version from the shared telemetry context, and adding local debugging + targeted tests.

Changes:

• Add track_session_started_once(...) and process-level tracking to ensure session_started is emitted once per session.
• Wire/app integration: emit session_started from Wire initialization (and a fallback on first prompt), and from non-wire app startup.
• Add telemetry debug server script and update/extend tests to reflect new attribution model (client info on event properties, not context).

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/kimi_cli/telemetry/__init__.py	Adds session-started tracking API/state and opportunistic flush scheduling.
src/kimi_cli/telemetry/sink.py	Removes client name/version enrichment from global context.
src/kimi_cli/wire/server.py	Tracks session start from wire initialize + prompt fallback.
src/kimi_cli/app.py	Tracks session start on app init for non-wire UI modes.
src/kimi_cli/soul/agent.py	Adds ui_mode / resumed fields onto Runtime for attribution.
tests/telemetry/test_instrumentation.py	Updates tests to assert client info is not in context; adds session_started-focused tests.
tests/telemetry/test_telemetry.py	Resets new session_started tracking state in test fixture.
tests/telemetry/test_crash.py	Resets new session_started tracking state in test fixture.
tests/core/test_wire_server_steer.py	Adds focused test ensuring wire client info emits session_started.
scripts/telemetry_debug_server.py	Adds a small local HTTP receiver for inspecting outbound telemetry payloads.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[devin-ai-integration]

Devin Review found 1 potential issue.

View 4 additional findings in Devin Review.

[devin-ai-integration]

🟡 copy_for_subagent does not propagate new ui_mode and resumed fields to subagent runtimes

The copy_for_subagent method at src/kimi_cli/soul/agent.py:339-361 constructs a new Runtime but does not pass ui_mode=self.ui_mode or resumed=self.resumed. This means every subagent runtime silently gets the defaults ui_mode="shell" and resumed=False, even when the parent is running in "wire" mode or was resumed. While no code currently reads these fields from subagent runtimes, the wire server accesses self._soul.runtime.resumed (src/kimi_cli/wire/server.py:639), and if a similar pattern is ever used in a subagent context, the values would be wrong.

(Refers to lines 339-361)

---

Was this helpful? React with 👍 or 👎 to provide feedback.