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feat(engine): semantic trace diff #49

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Merged
sepehr-safari merged 1 commit into from
Jul 11, 2026
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feat(engine): semantic trace diff #49

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20 changes: 13 additions & 7 deletions CURRENT_STATE.md
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Original file line number Diff line number Diff line change
Expand Up @@ -10,9 +10,9 @@

**S4 — Analysis parity+ (0.3.0): in progress.** S0–S3 are complete (the engine
and the native inspector). S4 reaches parity with the toolkit's analysis surface;
the first slices — Markdown / HTML report generation (#41) and anonymize-on-export
(#42) — have landed. Diff (#43), wall-clock replay (#44), and the headless CLI
(#45) remain (see [ROADMAP.md](ROADMAP.md)).
report generation (#41), anonymize-on-export (#42), and semantic trace diff (#43)
have landed. Wall-clock replay (#44) and the headless CLI (#45) remain (see
[ROADMAP.md](ROADMAP.md)).

## What's done

Expand Down Expand Up @@ -137,12 +137,18 @@ In progress. Landed so far:
regex), emitting pretty JSON. It mirrors the toolkit's code — including its two
documented quirks (meter values are not transformed; `transactionId` resequences
per occurrence) — flagged in-code rather than silently diverging.
- **Semantic trace diff (#43)** — `src/ocpp/diff.zig` compares two parsed traces
(mirroring the toolkit's `diffTraces`): events matched by OCPP UniqueId, with
field-level diffs (timestamp / direction / action / payload-deep-equal /
errorCode), added/removed events, a failure-set delta by code, and a
first-session summary comparison. Includes a recursive JSON deep-equality check
and a compact-JSON renderer for the changed values.

## What's next

Remaining **S4 — Analysis parity+ (0.3.0)** issues: semantic trace diff (#43),
replay + wall-clock playback (#44), and the headless CLI subcommands (#45). Then
**S5 — Live capture** (the flagship).
Remaining **S4 — Analysis parity+ (0.3.0)** issues: replay + wall-clock playback
(#44) and the headless CLI subcommands (#45). Then **S5 — Live capture** (the
flagship).

## Known blockers / decisions pending

Expand All @@ -154,7 +160,7 @@ replay + wall-clock playback (#44), and the headless CLI subcommands (#45). Then
| --- | --- |
| `repo` (tooling, CI) | ✅ done for S0 |
| `docs` (docs, ADRs) | ✅ done for S0 |
| `ocpp` (engine) | ✅ S2 + trusted ingestion (#29) + reports/summarizer (#41) + anonymize (#42); O(n) detection pending (#36) |
| `ocpp` (engine) | ✅ S2 + ingestion (#29) + reports/summarizer (#41) + anonymize (#42) + diff (#43); O(n) detection pending (#36) |
| `ui` (native views) | ✅ S3 inspector — timeline, message inspector, session + failure panels, search & filter (#27–#32) |
| `capture` (live proxy) | ⬜ not started (S5) |
| `cli` (headless) | ⬜ not started (S4) |
Expand Down
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