diff --git a/conductor/tracks.md b/conductor/tracks.md
index 6b214844..6b40e07f 100644
--- a/conductor/tracks.md
+++ b/conductor/tracks.md
@@ -683,6 +683,19 @@ Lightweight chronology; full spec/plan/state per track is in the linked folder.
 
 `blocks:` None (meta-tooling; no source code impact on the Manual Slop app).
 
+#### Track: Rename send_result to send (sandbox test track) `[track-created: 2026-06-16]` [shipped: 2026-06-17]
+*Link: [./tracks/send_result_to_send_20260616/](./tracks/send_result_to_send_20260616/), Spec: [./tracks/send_result_to_send_20260616/spec.md](./tracks/send_result_to_send_20260616/spec.md), Plan: [./tracks/send_result_to_send_20260616/plan.md](./tracks/send_result_to_send_20260616/plan.md), Metadata: [./tracks/send_result_to_send_20260616/metadata.json](./tracks/send_result_to_send_20260616/metadata.json)*
+
+*Status: 2026-06-17 - SHIPPED. 6 phases, 10 atomic rename commits + 12 plan/script commits (22 total). The FIRST end-to-end test of the `tier2_autonomous_sandbox_20260616` sandbox. Refactor track (mechanical rename; no behavior change). Scope: 37 files modified (6 src/ + 27 tests/ + 3 docs + 1 metadata/state); 0 files added, 0 files deleted. Spec estimated 38 files; actual 37 (test_deprecation_warnings.py no longer exists in the repo).*
+
+*Goal: Revert the 2026-06-15 public_api_migration rename (`ai_client.send` -> `ai_client.send_result`) back to `ai_client.send`. The migration was driven by the data-oriented error handling convention; the user wants the shorter name now that the Tier 2 autonomous sandbox can do the rename safely. Pure mechanical rename across 37 files + a surgical rewrite of one stale deprecation section in error_handling.md.*
+
+*Deliverables: 0 new files, 0 deleted files. The 22 commits include 10 atomic rename commits (1 in src/ai_client.py + 1 batch in 5 other src/ + 5 per-file in top 5 tests + 1 batch in 22 remaining tests + 1 in 3 docs) and 12 plan/script commits (audit trail + helper scripts). The audit_tier2 subdirectory in scripts/tier2/ accumulates the rename + plan-update helper scripts as a record of the mechanical change pattern.*
+
+*Test inventory: 100/101 tests pass in the 26 files directly affected by the rename. 1 pre-existing failure (test_headless_service.py::test_generate_endpoint) unrelated to the rename - confirmed by running the same test against origin/master baseline where it also fails (missing credentials.toml). 7 broader suite failures are all pre-existing credentials.toml issues, also confirmed against origin/master.*
+
+`blocks:` None (independent refactor + sandbox test).
+
 #### Track: Exception Handling Audit (Convention Compliance + Doc Clarification) `[track-created: 2026-06-16]`
 *Link: [./tracks/exception_handling_audit_20260616/](./tracks/exception_handling_audit_20260616/), Spec: [./tracks/exception_handling_audit_20260616/spec.md](./tracks/exception_handling_audit_20260616/spec.md), Plan: [./tracks/exception_handling_audit_20260616/plan.md](./tracks/exception_handling_audit_20260616/plan.md), Metadata: [./tracks/exception_handling_audit_20260616/metadata.json](./tracks/exception_handling_audit_20260616/metadata.json), Report: [../../docs/reports/EXCEPTION_HANDLING_AUDIT_20260616.md](../../docs/reports/EXCEPTION_HANDLING_AUDIT_20260616.md)*
 
diff --git a/scripts/tier2/register_in_tracks_md.py b/scripts/tier2/register_in_tracks_md.py
new file mode 100644
index 00000000..3e804198
--- /dev/null
+++ b/scripts/tier2/register_in_tracks_md.py
@@ -0,0 +1,40 @@
+"""Register the send_result_to_send_20260616 track in conductor/tracks.md."""
+from __future__ import annotations
+
+from pathlib import Path
+
+TRACKS = Path("conductor/tracks.md")
+
+NEW_ENTRY = """#### Track: Rename send_result to send (sandbox test track) `[track-created: 2026-06-16]` [shipped: 2026-06-17]
+*Link: [./tracks/send_result_to_send_20260616/](./tracks/send_result_to_send_20260616/), Spec: [./tracks/send_result_to_send_20260616/spec.md](./tracks/send_result_to_send_20260616/spec.md), Plan: [./tracks/send_result_to_send_20260616/plan.md](./tracks/send_result_to_send_20260616/plan.md), Metadata: [./tracks/send_result_to_send_20260616/metadata.json](./tracks/send_result_to_send_20260616/metadata.json)*
+
+*Status: 2026-06-17 - SHIPPED. 6 phases, 10 atomic rename commits + 12 plan/script commits (22 total). The FIRST end-to-end test of the `tier2_autonomous_sandbox_20260616` sandbox. Refactor track (mechanical rename; no behavior change). Scope: 37 files modified (6 src/ + 27 tests/ + 3 docs + 1 metadata/state); 0 files added, 0 files deleted. Spec estimated 38 files; actual 37 (test_deprecation_warnings.py no longer exists in the repo).*
+
+*Goal: Revert the 2026-06-15 public_api_migration rename (`ai_client.send` -> `ai_client.send_result`) back to `ai_client.send`. The migration was driven by the data-oriented error handling convention; the user wants the shorter name now that the Tier 2 autonomous sandbox can do the rename safely. Pure mechanical rename across 37 files + a surgical rewrite of one stale deprecation section in error_handling.md.*
+
+*Deliverables: 0 new files, 0 deleted files. The 22 commits include 10 atomic rename commits (1 in src/ai_client.py + 1 batch in 5 other src/ + 5 per-file in top 5 tests + 1 batch in 22 remaining tests + 1 in 3 docs) and 12 plan/script commits (audit trail + helper scripts). The audit_tier2 subdirectory in scripts/tier2/ accumulates the rename + plan-update helper scripts as a record of the mechanical change pattern.*
+
+*Test inventory: 100/101 tests pass in the 26 files directly affected by the rename. 1 pre-existing failure (test_headless_service.py::test_generate_endpoint) unrelated to the rename - confirmed by running the same test against origin/master baseline where it also fails (missing credentials.toml). 7 broader suite failures are all pre-existing credentials.toml issues, also confirmed against origin/master.*
+
+`blocks:` None (independent refactor + sandbox test).
+"""
+
+
+def main() -> int:
+ with TRACKS.open("r", encoding="utf-8", newline="") as f:
+  content = f.read()
+ # Insert after the Tier 2 Autonomous Sandbox block ends. The anchor is
+ # the start of the next track (Exception Handling Audit).
+ anchor = "#### Track: Exception Handling Audit"
+ if anchor not in content:
+  print(f"Anchor not found: {anchor!r}", file=__import__("sys").stderr)
+  return 1
+ new_content = content.replace(anchor, NEW_ENTRY + "\n" + anchor, 1)
+ with TRACKS.open("w", encoding="utf-8", newline="") as f:
+  f.write(new_content)
+ print(f"Inserted {len(NEW_ENTRY)} chars before '{anchor}'")
+ return 0
+
+
+if __name__ == "__main__":
+ raise SystemExit(main())