Remove go-json-experiment dependency

[apstndb]

Summary:

• Replace go-json-experiment/json usage in query profile parsing with encoding/json.RawMessage and encoding/json.Unmarshal.
• Rewrite JSONL streaming to preserve column order using standard encoding/json string encoding and raw JSON validation.
• Remove github.com/go-json-experiment/json from go.mod/go.sum.

Future encoding/json/v2 plan:

• Keep this PR on stable encoding/json because the local Go toolchain currently exposes encoding/json but not encoding/json/v2.
• When encoding/json/v2 is available in the supported Go baseline, evaluate it only for the small JSONL string/raw-value helper boundary and QueryProfile RawMessage decoding path.
• Before migrating, compare JSONL byte output for column order, RawJSONCell values, invalid raw JSON errors, HTML-sensitive characters, and newline escaping against the tests in this PR.
• Avoid reintroducing an experimental external module in library-facing packages; any v2 adoption should come from the standard library once the project Go baseline supports it.

Validation:

• go test ./internal/mycli/format -run 'TestFormatJSONL|TestJSONLFormatterLifecycle' -count=1
• go test ./internal/mycli -run 'TestParseQueryStats|TestParseQueryProfile' -count=1
• go mod why -m github.com/go-json-experiment/json
• make check

[gemini-code-assist]

Code Review

This pull request removes the third-party github.com/go-json-experiment/json dependency, refactoring the JSONLFormatter to manually construct JSON lines using the standard library's encoding/json and updating query profile structs to use json.RawMessage. The reviewer feedback advises against this change, recommending that jsontext.Encoder be retained and reused to ensure efficient streaming, avoid repeated allocations, and guarantee column order preservation in the JSONL output.

Important

The consumer version of Gemini Code Assist on GitHub is being sunset. Starting June 18, 2026, new organization installations will be blocked, and all code review activity will officially cease on July 17, 2026.
For more details on the timeline and next steps, please review the Help Documentation.

[github-actions]

Code Metrics Report

📊 View detailed coverage report (available for 7 days)

	main (800eb51)	#680 (1883d6b)	+/-
Coverage	70.2%	70.2%	+0.0%
Code to Test Ratio	1:1.2	1:1.2	-0.1
Test Execution Time	1m36s	50s	-46s

Details

  |                     | main (800eb51) | #680 (1883d6b) |  +/-  |
  |---------------------|----------------|----------------|-------|
+ | Coverage            |          70.2% |          70.2% | +0.0% |
  |   Files             |             84 |             84 |     0 |
  |   Lines             |           7497 |           7517 |   +20 |
+ |   Covered           |           5263 |           5281 |   +18 |
- | Code to Test Ratio  |          1:1.2 |          1:1.2 |  -0.1 |
  |   Code              |          17253 |          17283 |   +30 |
+ |   Test              |          22302 |          22323 |   +21 |
+ | Test Execution Time |          1m36s |            50s |  -46s |

Code coverage of files in pull request scope (24.7% → 35.1%)

Files	Coverage	+/-	Status
internal/mycli/format/streaming_jsonl.go	84.7%	+4.0%	modified
internal/mycli/statements_query_profile.go	6.3%	0.0%	modified

---

Reported by octocov

[apstndb]

/gemini review

[gemini-code-assist]

Code Review

This pull request removes the external dependency github.com/go-json-experiment/json and refactors the codebase to use the standard library's encoding/json package. Specifically, JSONLFormatter is updated to use json.Encoder with HTML escaping disabled (SetEscapeHTML(false)) to ensure HTML-sensitive characters are preserved in the JSONL output. It also manually formats JSON objects to preserve column order and validates raw JSON cells using json.Valid. Additionally, queryProfiles and rawQueryProfiles are updated to use json.RawMessage instead of jsontext.Value. Unit tests have been added to verify HTML-sensitive character handling and invalid raw JSON error reporting. There are no review comments, so I have no feedback to provide.

Important

The consumer version of Gemini Code Assist on GitHub is being sunset. Starting June 18, 2026, new organization installations will be blocked, and all code review activity will officially cease on July 17, 2026.
For more details on the timeline and next steps, please review the Help Documentation.