fix(domparser): preserve HTML parse modes

[ldm0]

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[github-actions]

Sequential Navigation Soak A/B

✅ HEAD completed the 200-navigation resilience and memory observation.

One browser process, one target, and one CDP session navigate CSDN → SegmentFault → Huaban → example.com repeatedly. This run issued 200 Page.navigate commands per binary.

Common ancestor 39d474864b → HEAD ee9edd418e; benchmark order: head-first; workflow: success.

Session resilience

Metric	Base	HEAD
Attempted / planned	200 / 200	200 / 200
Direct observable pass	200 / 200	200 / 200
Failures / recovered	0 / 0	0 / 0
Recovery failures	0	0
Lifecycle order violations	0	0
Network order violations	0	0
Wall time	355.9 s	385.4 s

A public-page failure is reported separately from an unrecoverable session. The soak requires all navigation attempts, zero failed recovery, zero lifecycle/network ordering violations, and complete resource evidence.

Process-tree memory

Metric	Base	HEAD	Δ
Boundary samples	200	200	0
Boundary RSS samples	200	200	0
Boundary PSS samples	200	200	0
Periodic peak RSS	318.6 MiB	308.4 MiB	-10.2 MiB
Periodic peak PSS	315.3 MiB	304.0 MiB	-11.2 MiB
RSS · first 10 avg	228.8 MiB	220.0 MiB	-8.7 MiB
RSS · last 10 avg	236.6 MiB	234.1 MiB	-2.5 MiB
RSS · last − first window	+7.9 MiB	+14.1 MiB	+6.2 MiB
RSS · warm slope / 100 nav	+3.7 MiB	+5.6 MiB	+1.9 MiB
PSS · first 10 avg	225.7 MiB	216.5 MiB	-9.2 MiB
PSS · last 10 avg	233.4 MiB	231.0 MiB	-2.4 MiB
PSS · last − first window	+7.7 MiB	+14.5 MiB	+6.8 MiB
PSS · warm slope / 100 nav	+3.5 MiB	+6.2 MiB	+2.6 MiB
Peak file descriptors	58	55	-3
Peak threads	29	27	-2

HEAD memory by 50-navigation quarter

HEAD range	Avg RSS	Final RSS	Peak RSS	Avg PSS	Final PSS	Peak FD
1–50	224.0 MiB	213.1 MiB	283.4 MiB	220.1 MiB	209.3 MiB	49
51–100	224.4 MiB	212.9 MiB	290.2 MiB	220.6 MiB	209.4 MiB	49
101–150	232.1 MiB	211.4 MiB	297.2 MiB	228.5 MiB	207.9 MiB	48
151–200	232.6 MiB	219.3 MiB	299.7 MiB	229.4 MiB	216.1 MiB	49

Raw reports and per-navigation boundary samples: workflow run and full sequential-navigation-soak-results artifact.

Public-site timing and memory are observational. Use the A/B deltas and trend shape as evidence, not as a deterministic performance threshold.

[github-actions]

Spider Bench A/B

✅ All benchmark browser service runs completed; results are informational.

Public HEAD: 184 / 240 rows; 38 / 48 sites produced rows; 10 unexpected empty sites.

✅ Deterministic fixture contract is clean.

Common ancestor 39d474864b39 → HEAD ee9edd418e0c; benchmark order: head-first; workflow: success.

Public 48-site run · informational

Metric	Base	HEAD	Δ
Run status	success	success	—
Extracted rows / contract	189 / 240	184 / 240	-5 (-2.65%)
Contract fill	78.75%	76.67%	-2.08 pp (-2.64%)
Sites with rows	39 / 48	38 / 48	-1 (-2.56%)
Sites meeting row contract	37 / 48	36 / 48	-1 (-2.70%)
Unexpected empty sites	9	10	+1 (+11.11%)
Partial-row sites	2	2	0 (0.00%)
Site outcomes	extracted: 38; HTTP error + rows: 1; empty: 6; HTTP error + empty: 1; snapshot error + empty: 2	extracted: 36; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 2	—
Observed duration	41.83 s	43.58 s	+1.75 s (+4.19%)
Estimated CPU	33.64 s	32.40 s	-1.24 s (-3.69%)
Peak PSS	341.14 MiB	258.59 MiB	-82.55 MiB (-24.20%)
Peak RSS	344.75 MiB	262.14 MiB	-82.61 MiB (-23.96%)
Peak threads	27	27	0 (0.00%)
Mismatched sites	0	0	0
Timeout with items	0	0	0

Category rows	Base	HEAD	Δ
news	35 / 40	35 / 40	0
stocks	20 / 40	20 / 40	0
tech	35 / 40	35 / 40	0
sports	32 / 40	27 / 40	-5
games	37 / 40	37 / 40	0
life	30 / 40	30 / 40	0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.036, 2.038, 2.539, 3.04, 3.54, 4.04, 5.042, 6.043, 7.044, 8.544, 9.544, 11.044, 12.045, 13.046, 14.548, 15.548, 17.05, 18.052, 19.054, 20.555, 21.556, 23.059, 24.06, 25.06, 26.563, 27.564, 29.066, 29.567, 30.068, 31.07, 32.573, 33.575, 35.077, 36.078, 37.079, 38.582, 39.582, 41.083]
    y-axis "CPU percent" 0 --> 200
    line [11.99, 97.72, 129.81, 103.75, 95.94, 163.89, 137.81, 135.82, 148.07, 77.98, 95.99, 89.94, 14.01, 81.97, 101.79, 0, 2, 97.83, 39.95, 117.88, 109.85, 53.92, 121.81, 123.88, 33.96, 85.91, 111.9, 129.73, 103.78, 101.83, 5.99, 15.97, 125.8, 115.87, 2, 1.99, 39.97, 115.77]

Loading

xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.036, 2.038, 2.539, 3.04, 3.54, 4.04, 5.042, 6.043, 7.044, 8.544, 9.544, 11.044, 12.045, 13.046, 14.548, 15.548, 17.05, 18.052, 19.054, 20.555, 21.556, 23.059, 24.06, 25.06, 26.563, 27.564, 29.066, 29.567, 30.068, 31.07, 32.573, 33.575, 35.077, 36.078, 37.079, 38.582, 39.582, 41.083, 41.825]
    y-axis "Memory MiB" 0 --> 500
    line [21.99, 93.29, 146.61, 180.82, 192.55, 190.48, 223.93, 274.68, 249.8, 273.43, 252.79, 219.83, 238.05, 228.8, 196.71, 205.72, 186.96, 182.05, 210.29, 197.2, 236.75, 280.77, 211.48, 261.53, 224.23, 204.49, 208.61, 326.68, 344.74, 344.75, 247.14, 223.3, 224.82, 252.85, 234.19, 199.75, 198.41, 196.38, 239.77, 0]
    line [18.85, 91.86, 143.02, 177.25, 189.01, 187.34, 220.69, 271.1, 246.24, 269.55, 249.21, 216.31, 234.65, 225.42, 193.33, 202.34, 184.34, 178.67, 207.11, 193.81, 233.13, 277.19, 208.34, 257.94, 220.63, 200.9, 205.03, 323.11, 341.14, 341.07, 243.46, 219.6, 221.13, 249.15, 230.51, 196.05, 194.72, 192.69, 236.67, 0]

Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.036, 2.037, 2.539, 3.54, 5.041, 5.543, 6.043, 7.545, 8.548, 9.549, 11.051, 12.052, 13.554, 14.556, 15.559, 17.061, 18.061, 19.564, 20.565, 22.067, 23.069, 24.071, 25.071, 25.571, 26.572, 28.073, 29.075, 30.076, 31.577, 32.578, 34.08, 35.081, 36.582, 37.584, 38.585, 40.087, 41.087, 42.589]
    y-axis "CPU percent" 0 --> 200
    line [0, 39.96, 117.69, 117.8, 43.93, 165.57, 135.95, 105.88, 137.78, 63.92, 133.63, 69.89, 15.97, 91.81, 115.72, 0, 0, 43.89, 95.91, 95.88, 113.83, 129.75, 101.97, 93.99, 75.91, 101.97, 119.84, 17.98, 73.94, 4, 99.88, 85.86, 4, 0, 0, 117.72, 32.02, 107.81]

Loading

xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.036, 2.037, 2.539, 3.54, 5.041, 5.543, 6.043, 7.545, 8.548, 9.549, 11.051, 12.052, 13.554, 14.556, 15.559, 17.061, 18.061, 19.564, 20.565, 22.067, 23.069, 24.071, 25.071, 25.571, 26.572, 28.073, 29.075, 30.076, 31.577, 32.578, 34.08, 35.081, 36.582, 37.584, 38.585, 40.087, 41.087, 42.589, 43.578]
    y-axis "Memory MiB" 0 --> 500
    line [22.13, 76.09, 120.91, 144.76, 185.65, 207.43, 215.25, 242.52, 221.26, 224.81, 225.04, 243.73, 219.48, 170.61, 206.95, 209.84, 188.75, 186.45, 182.59, 231.15, 211.44, 230.27, 241.42, 262.14, 202.84, 206.5, 253.61, 219.95, 196.69, 195.21, 193.46, 261.73, 224.95, 216.62, 212.64, 187.83, 226.11, 196.71, 222.25, 0]
    line [18.89, 72.52, 117.35, 141.27, 182.16, 203.88, 211.69, 238.94, 217.72, 221.25, 221.49, 240.15, 215.91, 167.03, 203.22, 205.82, 185.2, 182.91, 179.05, 227.68, 207.83, 228.7, 237.87, 258.59, 199.29, 202.88, 250, 216.32, 193.07, 191.61, 189.84, 258.11, 221.32, 213, 209.02, 184.21, 222.48, 193.09, 218.63, 0]

Loading

Deterministic fixture · required contract

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric	Base	HEAD	Δ
Run status	success	success	—
Extracted rows / contract	40 / 40	40 / 40	0 (0.00%)
Contract fill	100.00%	100.00%	0.00 pp (0.00%)
Sites with rows	8 / 15	8 / 15	0 (0.00%)
Sites meeting row contract	15 / 15	15 / 15	0 (0.00%)
Unexpected empty sites	0	0	0
Partial-row sites	0	0	0
Site outcomes	extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4	extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4	—
Observed duration	19.93 s	19.92 s	-0.01 s (-0.04%)
Estimated CPU	0.42 s	0.44 s	+0.02 s (+4.74%)
Peak PSS	85.23 MiB	84.40 MiB	-0.83 MiB (-0.98%)
Peak RSS	88.63 MiB	87.88 MiB	-0.75 MiB (-0.84%)
Peak threads	18	18	0 (0.00%)
Mismatched sites	0	0	0
Timeout with items	0	0	0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

The public-web A/B is informational. The exact HEAD fixture contract runs as a separate required CI check; timing and public-site content deltas remain non-blocking.