diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 0000000000..79ac8de329
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,26 @@
+# Tracera local cargo configuration.
+#
+# Workaround for an upstream linker bug on stable rustc (1.94+) on
+# Apple Silicon macOS: the system `ld64` produces proc-macro dylibs
+# (notably `libsqlx_macros-*.dylib`) whose `LC_LINKEDIT` segment ends
+# up mis-aligned, which then crashes the rustc invocation that tries
+# to dlopen them with `mis-aligned LINKEDIT string pool` (offset
+# `0x00841F24` in the typical reproduction).
+#
+# The documented fix is to force `rust-lld` as the linker for the
+# proc-macro dylib step. `rust-lld` ships with every rust toolchain
+# and is added to PATH by rustup when a toolchain is active, so this
+# config is portable across all rustup-managed toolchains and does not
+# hardcode a per-user install path.
+#
+# See:
+#   - https://github.com/rust-lang/rust/issues/117458
+#   - https://github.com/aws/aws-lc-rs/issues/380
+#
+# This applies only to aarch64-apple-darwin (Apple Silicon macOS);
+# x86_64 macOS, Linux, and Windows use their default toolchains
+# unchanged.
+
+[target.aarch64-apple-darwin]
+linker = "rust-lld"
+rustflags = ["-C", "link-arg=-no_compact_unwind"]
diff --git a/.gitignore b/.gitignore
index 6c33df0a58..cedd5b00f6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,6 +18,10 @@ __pycache__/
 # artifacts, not committed from a developer worktree.
 /release-manifest.json
 
+# Runtime data directory (SQLite DBs, uploaded artifacts). Always local-only.
+/data/
+/data/*
+
 # Node lockfiles + electron-builder output (not committed per repo convention)
 package-lock.json
 frontend/apps/desktop/release/
diff --git a/crates/tracera-server/testdata/agentora-mlx-benchmark-run.json b/crates/tracera-server/testdata/agentora-mlx-benchmark-run.json
new file mode 100644
index 0000000000..f1765283c9
--- /dev/null
+++ b/crates/tracera-server/testdata/agentora-mlx-benchmark-run.json
@@ -0,0 +1 @@
+{"attempt_id":"att_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","deterministic_identity":{"algorithm":"sha256(canonical-json(inputs))","canonical_json_sha256":"c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","inputs":{"commit":"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","hardware":"synthetic","harness":"agentora","model":"mlx.synthetic.echo","repo":"pheno-harness","task_id":"agentora-mlx-deterministic"}},"events":[{"causality":{"attempt_id":"att_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","run_id":"run_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","session_id":"ses_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","tenant_id":"phenotype"},"details":{"suite":"agentora-mlx-deterministic","task_count":2},"event_id":"evt_94599119d2e16a483e9b746f4bef1454350a844171cf7c47ce0f7e51c1ce08bc","payload_sha256":"d400098b49b4e22761342a49ac5a8c02a194361591eb451352b04ea68c1fc54e","seq":0,"ts":"2026-01-01T00:00:00+00:00","type":"run_started"},{"causality":{"attempt_id":"att_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","run_id":"run_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","session_id":"ses_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","tenant_id":"phenotype"},"checkpoint_id":"chk_bc9a2c9af539f8317703e62712ba6ecbe11ae1398ca2e65c803f54df1c00add0","details":{"checkpoint":"initial"},"event_id":"evt_c426d1d4f9555061f5f43a1aa1438d6f112d55f32caf58bcbc0b7751322a4cf2","payload_sha256":"a520aa77180e891bdece1662843bcde78697781ed59057b3448c2ebeedf0df18","seq":1,"ts":"2026-01-01T00:00:00+00:00","type":"checkpoint"},{"causality":{"attempt_id":"att_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","run_id":"run_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","session_id":"ses_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","tenant_id":"phenotype"},"checkpoint_id":"chk_bc9a2c9af539f8317703e62712ba6ecbe11ae1398ca2e65c803f54df1c00add0","details":{"dropped_event_ids":[],"retained_event_ids":[],"tokens_after":18,"tokens_before":18},"event_id":"evt_d9c265202b86696985c2a7795a918ed15cfd6d857efe046c50a9965b29578abb","payload_sha256":"117aa9324fa9e769534305f605e3b1132310ab672f8001cbe266df986adeba31","seq":2,"ts":"2026-01-01T00:00:00+00:00","type":"compaction"},{"causality":{"attempt_id":"att_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","run_id":"run_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","session_id":"ses_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","tenant_id":"phenotype"},"details":{"arguments":{"value":"alpha"},"task_id":"echo-1","tool_call_id":"call-echo-1","tool_name":"echo"},"event_id":"evt_225cc0131b3dee702e1e01668d0ce0a66c0a84b4c0da6ade63bad618dd3f354d","payload_sha256":"c5022041bf320a653523dd9c16103f859273176d33cafe2113ccac061eeb679b","seq":3,"ts":"2026-01-01T00:00:00+00:00","type":"tool_call"},{"causality":{"attempt_id":"att_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","run_id":"run_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","session_id":"ses_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","tenant_id":"phenotype"},"details":{"arguments":{"value":"alpha"},"result":"alpha","task_id":"echo-1","tool_call_id":"call-echo-1","tool_name":"echo"},"event_id":"evt_7d520b2b18e575ffd7b21d18dccba03d992b343c58a13b1eb9f3e8b763599316","payload_sha256":"0fa142ecbc810becf010f2e11c6cf78cae5ac3b243dc1114cb416ff8245e5000","seq":4,"ts":"2026-01-01T00:00:00+00:00","type":"tool_result"},{"causality":{"attempt_id":"att_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","run_id":"run_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","session_id":"ses_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","tenant_id":"phenotype"},"details":{"arguments":{"value":"beta"},"task_id":"echo-2","tool_call_id":"call-echo-2","tool_name":"echo"},"event_id":"evt_ef9beddf8a51d2577d66b8c8816af60eb6ce79c1414a1c16ea9c7263c113738c","payload_sha256":"baf8afd537f7cca6825643811683d5719b1659ed376641721d406431b45d154a","seq":5,"ts":"2026-01-01T00:00:00+00:00","type":"tool_call"},{"causality":{"attempt_id":"att_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","run_id":"run_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","session_id":"ses_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","tenant_id":"phenotype"},"details":{"arguments":{"value":"beta"},"result":"beta","task_id":"echo-2","tool_call_id":"call-echo-2","tool_name":"echo"},"event_id":"evt_fb9618ab6b058e523c7df5929b90adeac4c259bf67ad655e8ddeaedbf9e9e6fa","payload_sha256":"482221db02ea7286fd54c201c499cf3ab261608ab172bc9e6f0586c59c6d303e","seq":6,"ts":"2026-01-01T00:00:00+00:00","type":"tool_result"},{"causality":{"attempt_id":"att_c9d161faa78af31bed0b9caea76c58db554e0fb2547c2be9f5db4497358bfb66","ru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