diff --git a/agentic-loop-traces/issue-29.md b/agentic-loop-traces/issue-29.md
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+# Agentic Loop Trace for Issue #29
+
+- Branch: `agentic/issue-29`
+- Purpose: committed audit trail of agent decisions for human review.
+
+## Planner - 2026-06-19T12:54:07.756133+00:00
+
+- Summary: Add the requested text fixture and a single focused test that checks its exact contents.
+
+### Steps
+1. Create `tests/agentic_demo/sample.txt` with the three required lines: `alpha`, `beta`, `gamma`, in that exact order and with trailing newline behavior matching the repository's text file conventions.
+   - Verify: Open the file and confirm the contents match exactly, including line order and no extra text.
+2. Add one minimal Python test that reads `tests/agentic_demo/sample.txt` and asserts the full file content equals the expected three-line string exactly.
+   - Verify: Run `python -m pytest` and confirm the new test passes.
+
+### Risks
+- Text-file newline handling could cause an exact-match failure if the test and fixture are not aligned on trailing newline expectations.
+
+## Implementer - 2026-06-19T12:54:07.766709+00:00
+
+- Summary: Added `tests/agentic_demo/sample.txt` with the required three-line fixture and a focused Python test that asserts its exact UTF-8 content, including the trailing newline. Verified with `python -m pytest` and `python -m agentic_loop validate`.
+- Commit message: `Add isolated text fixture and exact-content test`
+
+### Files changed
+- `tests/agentic_demo/sample.txt`
+- `tests/test_agentic_demo_sample.py`
+
+## Validation - 2026-06-19T12:54:36.646065+00:00
+
+- Status: passed
+
+### Commands
+- `python -m pytest` exited `0`
+- `python -m agentic_loop validate` exited `0`
+
+## Reviewer - 2026-06-19T12:55:11.064997+00:00
+
+- Cycle: 0
+- Review status: approved
+- Summary: The branch adds the requested `tests/agentic_demo/sample.txt` fixture with the exact three lines and includes a minimal test that verifies the full file contents exactly. Validation already passed with `python -m pytest` and `python -m agentic_loop validate`.
+- Policy decision: approved
+- Decision reason: review approved
+
+### Findings
+- None.
+
+## Orchestrator - 2026-06-19T12:55:26.364982+00:00
+
+- Phase: human-review
+- Handoff reason: review approved
diff --git a/tests/agentic_demo/sample.txt b/tests/agentic_demo/sample.txt
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+++ b/tests/agentic_demo/sample.txt
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+alpha
+beta
+gamma
diff --git a/tests/test_agentic_demo_sample.py b/tests/test_agentic_demo_sample.py
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+++ b/tests/test_agentic_demo_sample.py
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+from pathlib import Path
+
+
+def test_agentic_demo_sample_contents():
+    sample = Path(__file__).resolve().parent / "agentic_demo" / "sample.txt"
+    assert sample.read_text(encoding="utf-8") == "alpha\nbeta\ngamma\n"