svg-check

Name: svg-check
Author: sordi-ai

17stars3forks

How to install svg-check?

sordi-ai/skill-everything/svg-check

$npx -y skills add sordi-ai/skill-everything --skill svg-check

Installs into the current project.

Summary

Apply when editing, generating, or reviewing any SVG diagram. Pixel-perfect Playwright bbox-check is the acceptance test — eyeballing is not sufficient. Run on every SVG before declaring done.

Files · 1

View on GitHub

SKILL.md

1	# Sub-Skill: SVG Check
2
3	Purpose. Catch text-overflow and foreign-rect-intersection bugs in SVG diagrams before commit. LLM eyeball review at 4× zoom misses these bug classes consistently — measurement is the only reliable test.
4
5	The acceptance test is the script output. Not your visual judgment.
6
7	---
8
9	## When to apply
10
11	Apply this skill whenever:
12
13	- you are editing an existing SVG (`*.svg` in any docs/diagrams folder),
14	- you are producing a new SVG from scratch,
15	- a designer agent reports an SVG as "clean" — verify with the script,
16	- you are reviewing a PR that touches `*.svg`.
17
18	---
19
20	## The two bug classes the script catches
21
22	1. OVERFLOW (own-container): a `<text>` whose rendered bbox extends past the bounds of its containing `<rect>` (in the same `<g>`). Caught by `getBBox()` measurement, tolerance 2 px.
23
24	2. FOREIGN-RECT INTERSECT: a `<text>` whose viewport bbox intersects a `<rect>` that is not an ancestor of the text — i.e. a tagline ascender that touches a structural box above/below it. Caught by `getBoundingClientRect()` intersection, tolerance 2 px.
25
26	Both classes filter false-positives: rects smaller than 40 × 18 (legend swatches) are not treated as containers; texts that start more than 5 px outside a rect's horizontal range are not treated as contained.
27
28	---
29
30	## How to run
31
32	The script lives next to this file: [`overflow-check.js`](./overflow-check.js). It needs Playwright installed once per machine.
33
34	### One-time setup
35
36	```bash
37	# From the skill folder
38	cd skills/svg-check
39	bash setup.sh
40	```
41
42	Or manually:
43
44	```bash
45	npm install playwright
46	npx playwright install chromium --with-deps
47	```
48
49	### Run on one SVG
50
51	```bash
52	node skills/svg-check/overflow-check.js path/to/diagram.svg
53	```
54
55	### Run on all SVGs in a folder
56
57	```bash
58	for svg in path/to/*.svg; do
59	out=$(node skills/svg-check/overflow-check.js "$svg" 2>&1)
60	if echo "$out" \| grep -q "FOUND"; then
61	echo "FAIL: $svg"; echo "$out" \| grep -E "FOUND\| \[\| \""
62	fi
63	done
64	```
65
66	The script exits non-zero when issues are found — suitable for use as a pre-commit gate or CI step.
67
68	---
69
70	## Acceptance criteria
71
72	The script output must contain both of these lines, verbatim, for every SVG in scope:
73
74	```
75	OVERFLOW: CLEAN — 0 text overflows past their containing rect
76	FOREIGN-RECT INTERSECT: CLEAN — 0 text-vs-foreign-rect intersections
77	```
78
79	Anything else means not done. Fix the SVG (shorten text, widen rect, move element, change font-size) and re-run until both lines are CLEAN.
80
81	In addition, after the script is CLEAN, render a Playwright screenshot in light + dark mode and visually cross-check for bug classes the script does not cover (see § Limits below).
82
83	---
84
85	## How to fix common overflow patterns
86
87	\| Pattern \| Fix \|
88	\|---\|---\|
89	\| Mono-tag text wider than its 200 px box \| Move trailing content to a `mono-dim` line below, or drop the suffix entirely. Match the sibling-box pattern. \|
90	\| Tagline ascenders touch the rect above \| Extend the SVG viewBox height (`500 → 520`) and move the tagline down. Other elements stay put. \|
91	\| Two-line label tight in a folder glyph \| Move from `y=22/33` to `y=21/34` (13 px line-height instead of 11 px). \|
92	\| Annotation text overflowing a chip \| Either widen the chip rect or shorten the annotation. Do not suppress the script — fix the SVG. \|
93
94	---
95
96	## Examples
97
98	See [`EXAMPLES.md`](./EXAMPLES.md) for real before/after fixes with script output.
99
100	---
101
102	## Limits — what the script does NOT catch
103
104	These remain eyeball-only for now. When a missed bug class surfaces, extend the script with a new check class — do not rely on agent self-reporting.
105
106	- Text-vs-line overlaps: a `<text>` crossing an `<line>` arrow.
107	- ≥12 px clearance between text-baseline and the nearest line below it.
108	- Sibling text overlaps: two `<text>` elements at the same coords.
109	- Color contrast ratio in dark mode.
110	- Glyph render quality at small sizes (≤ 10 px).
111
112	---
113
114	## Why this skill exists (incident history)
115
116	- 2026-05-11 #1: a four-designer parallel review declared `architecture.svg` clean. The GEMINI CLI loader-tag overflowed its 200 px box by 42.6 px. No agent measured.
117	- 2026-05-11 #2: a follow-up three-cycle eyeball review missed that the tagline ascenders intruded into the folder-strip border above. The fix was a 20 px viewBox extension; the bug was a 2 px overlap that the agents could not detect by sight.
118
119	The script was built after the second miss. It catches both bug classes in under 5 seconds.
120
121	The rule that follows from these incidents: don't trust agent self-reports of "no issues at 4× zoom". Trust the measurement.
122
123	---
124
125	## R

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svg-check

17stars3forks

View on GitHub

How to install svg-check?

sordi-ai/skill-everything/svg-check

$npx -y skills add sordi-ai/skill-everything --skill svg-check

Installs into the current project.

Summary

Apply when editing, generating, or reviewing any SVG diagram. Pixel-perfect Playwright bbox-check is the acceptance test — eyeballing is not sufficient. Run on every SVG before declaring done.

Files · 1

View on GitHub

SKILL.md

1	# Sub-Skill: SVG Check
2
3	Purpose. Catch text-overflow and foreign-rect-intersection bugs in SVG diagrams before commit. LLM eyeball review at 4× zoom misses these bug classes consistently — measurement is the only reliable test.
4
5	The acceptance test is the script output. Not your visual judgment.
6
7	---
8
9	## When to apply
10
11	Apply this skill whenever:
12
13	- you are editing an existing SVG (`*.svg` in any docs/diagrams folder),
14	- you are producing a new SVG from scratch,
15	- a designer agent reports an SVG as "clean" — verify with the script,
16	- you are reviewing a PR that touches `*.svg`.
17
18	---
19
20	## The two bug classes the script catches
21
22	1. OVERFLOW (own-container): a `<text>` whose rendered bbox extends past the bounds of its containing `<rect>` (in the same `<g>`). Caught by `getBBox()` measurement, tolerance 2 px.
23
24	2. FOREIGN-RECT INTERSECT: a `<text>` whose viewport bbox intersects a `<rect>` that is not an ancestor of the text — i.e. a tagline ascender that touches a structural box above/below it. Caught by `getBoundingClientRect()` intersection, tolerance 2 px.
25
26	Both classes filter false-positives: rects smaller than 40 × 18 (legend swatches) are not treated as containers; texts that start more than 5 px outside a rect's horizontal range are not treated as contained.
27
28	---
29
30	## How to run
31
32	The script lives next to this file: [`overflow-check.js`](./overflow-check.js). It needs Playwright installed once per machine.
33
34	### One-time setup
35
36	```bash
37	# From the skill folder
38	cd skills/svg-check
39	bash setup.sh
40	```
41
42	Or manually:
43
44	```bash
45	npm install playwright
46	npx playwright install chromium --with-deps
47	```
48
49	### Run on one SVG
50
51	```bash
52	node skills/svg-check/overflow-check.js path/to/diagram.svg
53	```
54
55	### Run on all SVGs in a folder
56
57	```bash
58	for svg in path/to/*.svg; do
59	out=$(node skills/svg-check/overflow-check.js "$svg" 2>&1)
60	if echo "$out" \| grep -q "FOUND"; then
61	echo "FAIL: $svg"; echo "$out" \| grep -E "FOUND\| \[\| \""
62	fi
63	done
64	```
65
66	The script exits non-zero when issues are found — suitable for use as a pre-commit gate or CI step.
67
68	---
69
70	## Acceptance criteria
71
72	The script output must contain both of these lines, verbatim, for every SVG in scope:
73
74	```
75	OVERFLOW: CLEAN — 0 text overflows past their containing rect
76	FOREIGN-RECT INTERSECT: CLEAN — 0 text-vs-foreign-rect intersections
77	```
78
79	Anything else means not done. Fix the SVG (shorten text, widen rect, move element, change font-size) and re-run until both lines are CLEAN.
80
81	In addition, after the script is CLEAN, render a Playwright screenshot in light + dark mode and visually cross-check for bug classes the script does not cover (see § Limits below).
82
83	---
84
85	## How to fix common overflow patterns
86
87	\| Pattern \| Fix \|
88	\|---\|---\|
89	\| Mono-tag text wider than its 200 px box \| Move trailing content to a `mono-dim` line below, or drop the suffix entirely. Match the sibling-box pattern. \|
90	\| Tagline ascenders touch the rect above \| Extend the SVG viewBox height (`500 → 520`) and move the tagline down. Other elements stay put. \|
91	\| Two-line label tight in a folder glyph \| Move from `y=22/33` to `y=21/34` (13 px line-height instead of 11 px). \|
92	\| Annotation text overflowing a chip \| Either widen the chip rect or shorten the annotation. Do not suppress the script — fix the SVG. \|
93
94	---
95
96	## Examples
97
98	See [`EXAMPLES.md`](./EXAMPLES.md) for real before/after fixes with script output.
99
100	---
101
102	## Limits — what the script does NOT catch
103
104	These remain eyeball-only for now. When a missed bug class surfaces, extend the script with a new check class — do not rely on agent self-reporting.
105
106	- Text-vs-line overlaps: a `<text>` crossing an `<line>` arrow.
107	- ≥12 px clearance between text-baseline and the nearest line below it.
108	- Sibling text overlaps: two `<text>` elements at the same coords.
109	- Color contrast ratio in dark mode.
110	- Glyph render quality at small sizes (≤ 10 px).
111
112	---
113
114	## Why this skill exists (incident history)
115
116	- 2026-05-11 #1: a four-designer parallel review declared `architecture.svg` clean. The GEMINI CLI loader-tag overflowed its 200 px box by 42.6 px. No agent measured.
117	- 2026-05-11 #2: a follow-up three-cycle eyeball review missed that the tagline ascenders intruded into the folder-strip border above. The fix was a 20 px viewBox extension; the bug was a 2 px overlap that the agents could not detect by sight.
118
119	The script was built after the second miss. It catches both bug classes in under 5 seconds.
120
121	The rule that follows from these incidents: don't trust agent self-reports of "no issues at 4× zoom". Trust the measurement.
122
123	---
124
125	## R

People who liked this also viewed

6 picks

Type