From 1a5fc9428a12b677d812545d01793c276a25c60d Mon Sep 17 00:00:00 2001
From: retoor <retoor@molodetz.nl>
Date: Sun, 9 Aug 2026 11:39:53 +0200
Subject: [PATCH] FUCKER

---
 devplacepy/static/css/CLAUDE.md               |  2 +-
 devplacepy/static/css/awards.css              |  2 +-
 devplacepy/static/css/feed.css                |  3 +
 devplacepy/static/css/gists.css               |  6 +-
 devplacepy/static/css/landing.css             | 12 ++--
 devplacepy/static/css/news.css                |  4 +-
 devplacepy/static/css/profile.css             |  1 +
 devplacepy/static/css/projects.css            |  8 ++-
 .../templates/docs/styles-consistency.html    |  2 +-
 devplacepy/templates/docs/styles-layout.html  |  4 +-
 tests/conftest.py                             | 29 +++++++++
 tests/e2e/feed.py                             | 61 ++++++++++++++++++-
 tests/e2e/gists.py                            | 49 ++++++++++++++-
 tests/e2e/profile/index.py                    | 22 ++++++-
 14 files changed, 188 insertions(+), 17 deletions(-)

diff --git a/devplacepy/static/css/CLAUDE.md b/devplacepy/static/css/CLAUDE.md
index 5cdf5cd0..989c328c 100644
--- a/devplacepy/static/css/CLAUDE.md
+++ b/devplacepy/static/css/CLAUDE.md
@@ -37,6 +37,6 @@ One global rule at the end of `base.css` collapses every animation/transition to
 
 - Flexbox + CSS Grid with `gap` only; floats for layout are forbidden.
 - Approved page layouts and the shared shell are documented in `/docs/styles-layout.html`; a page supplies exactly one layout container inside `.page`.
-- Every fluid grid/flex column sets `min-width: 0`.
+- Every fluid grid/flex column sets `min-width: 0`, and every fluid grid track that holds content is written `minmax(0, 1fr)`, never a bare `1fr`. A `1fr` track's automatic minimum is the item's min-content size, so one unwrappable line inside a rendered code block (`.rendered-content pre`, `white-space: pre`) widens the track and blows the whole page open sideways. This is why a detail page (a `max-width` block, definite width, the `pre` scrolls inside it) survives content that destroys a listing grid. The rule covers a column that is fixed-width at desktop but becomes the single fluid column at a breakpoint (`.profile-sidebar`), and it is regression-tested by `assert_no_horizontal_overflow` in `tests/conftest.py`.
 - `!important` is allowed only for: the `.hidden`/`[hidden]` display utilities, the global reduced-motion rule, and the devii-avatar third-party-beating override. Anything else is a specificity problem to be fixed structurally.
 - Page-specific CSS lives in its own `static/css/*.css` loaded via `{% block extra_head %}`, never an inline `<style>` block; shared component styles live once (`components.css`, `feed.css` vote buttons) and are never redefined per page.
diff --git a/devplacepy/static/css/awards.css b/devplacepy/static/css/awards.css
index 6f7aa038..d09c9ab5 100644
--- a/devplacepy/static/css/awards.css
+++ b/devplacepy/static/css/awards.css
@@ -43,7 +43,7 @@
 
 @media (max-width: 768px) {
     .awards-grid {
-        grid-template-columns: 1fr;
+        grid-template-columns: minmax(0, 1fr);
     }
 }
 
diff --git a/devplacepy/static/css/feed.css b/devplacepy/static/css/feed.css
index 2ea67563..84f2951f 100644
--- a/devplacepy/static/css/feed.css
+++ b/devplacepy/static/css/feed.css
@@ -7,6 +7,9 @@
     align-items: start;
 }
 
+.feed-main {
+    min-width: 0;
+}
 
 .feed-nav {
     display: flex;
diff --git a/devplacepy/static/css/gists.css b/devplacepy/static/css/gists.css
index 509b57f2..01777db1 100644
--- a/devplacepy/static/css/gists.css
+++ b/devplacepy/static/css/gists.css
@@ -17,6 +17,10 @@
     align-items: start;
 }
 
+.gists-main {
+    min-width: 0;
+}
+
 .gists-header {
     display: flex;
     align-items: center;
@@ -36,7 +40,7 @@
 
 .gists-grid {
     display: grid;
-    grid-template-columns: 1fr;
+    grid-template-columns: minmax(0, 1fr);
     gap: 1rem;
 }
 
diff --git a/devplacepy/static/css/landing.css b/devplacepy/static/css/landing.css
index fec4afa3..4dafab4e 100644
--- a/devplacepy/static/css/landing.css
+++ b/devplacepy/static/css/landing.css
@@ -141,6 +141,10 @@
     align-items: start;
 }
 
+.dashboard-feed {
+    min-width: 0;
+}
+
 .dashboard-feed-header {
     display: flex;
     align-items: center;
@@ -167,7 +171,7 @@
 
 .dashboard-posts-grid {
     display: grid;
-    grid-template-columns: repeat(2, 1fr);
+    grid-template-columns: repeat(2, minmax(0, 1fr));
     gap: 0.875rem;
 }
 
@@ -373,7 +377,7 @@
         align-items: flex-start;
     }
     .dashboard-posts-grid {
-        grid-template-columns: 1fr;
+        grid-template-columns: minmax(0, 1fr);
     }
 }
 
@@ -713,7 +717,7 @@
 
 .landing-posts-grid {
     display: grid;
-    grid-template-columns: repeat(2, 1fr);
+    grid-template-columns: repeat(2, minmax(0, 1fr));
     gap: 1rem;
 }
 
@@ -850,7 +854,7 @@
         padding: 0 1rem;
     }
     .landing-posts-grid {
-        grid-template-columns: 1fr;
+        grid-template-columns: minmax(0, 1fr);
     }
 }
 
diff --git a/devplacepy/static/css/news.css b/devplacepy/static/css/news.css
index 670b8bca..ddbd5e1c 100644
--- a/devplacepy/static/css/news.css
+++ b/devplacepy/static/css/news.css
@@ -24,7 +24,7 @@
 
 .news-grid {
     display: grid;
-    grid-template-columns: repeat(2, 1fr);
+    grid-template-columns: repeat(2, minmax(0, 1fr));
     gap: 1.25rem;
 }
 
@@ -283,7 +283,7 @@
 
 @media (max-width: 768px) {
     .news-grid {
-        grid-template-columns: 1fr;
+        grid-template-columns: minmax(0, 1fr);
     }
 
     .news-header h1 {
diff --git a/devplacepy/static/css/profile.css b/devplacepy/static/css/profile.css
index 7db768d2..31dd6b08 100644
--- a/devplacepy/static/css/profile.css
+++ b/devplacepy/static/css/profile.css
@@ -10,6 +10,7 @@
 .profile-sidebar {
     position: sticky;
     top: calc(var(--nav-height) + 1rem);
+    min-width: 0;
 }
 
 .profile-card {
diff --git a/devplacepy/static/css/projects.css b/devplacepy/static/css/projects.css
index aa4cab89..ed9f64bd 100644
--- a/devplacepy/static/css/projects.css
+++ b/devplacepy/static/css/projects.css
@@ -7,6 +7,10 @@
     align-items: start;
 }
 
+.projects-main {
+    min-width: 0;
+}
+
 .projects-tabs {
     display: flex;
     gap: 0.25rem;
@@ -177,13 +181,13 @@
         grid-template-columns: 1fr;
     }
     .projects-grid {
-        grid-template-columns: 1fr;
+        grid-template-columns: minmax(0, 1fr);
     }
 }
 
 @media (max-width: 768px) {
     .projects-grid {
-        grid-template-columns: 1fr;
+        grid-template-columns: minmax(0, 1fr);
     }
 
     .projects-header {
diff --git a/devplacepy/templates/docs/styles-consistency.html b/devplacepy/templates/docs/styles-consistency.html
index 31408192..3a77cf5a 100644
--- a/devplacepy/templates/docs/styles-consistency.html
+++ b/devplacepy/templates/docs/styles-consistency.html
@@ -85,7 +85,7 @@ Content sits on cards built from tokens: `--bg-card`, a `--border` hairline, `--
 - [ ] `{% extends "base.html" %}`; CSS via `extra_head`, JS via `extra_js`.
 - [ ] Two or more breadcrumbs passed in the SEO context (content clears the nav).
 - [ ] Exactly one layout container inside `.page`; no second `max-width` wrapper.
-- [ ] Multi-column = grid with `<aside>` rails, fluid column has `min-width: 0`, collapses at `1024px`.
+- [ ] Multi-column = grid with `<aside>` rails, fluid column has `min-width: 0`, card-grid tracks are `minmax(0, 1fr)`, collapses at `1024px`.
 - [ ] One `<h1>` (use `.sr-only` if visually redundant).
 - [ ] No custom header or footer; both come from `base.html`.
 - [ ] Only tokens for colour, spacing, radius, shadow, and z-index; no `var()` fallback values.
diff --git a/devplacepy/templates/docs/styles-layout.html b/devplacepy/templates/docs/styles-layout.html
index f9ae6f31..7994f13f 100644
--- a/devplacepy/templates/docs/styles-layout.html
+++ b/devplacepy/templates/docs/styles-layout.html
@@ -111,8 +111,8 @@ A new stacked element picks the token matching its role; if none fits, add a tok
 
 ## Acceptable and not
 
-- **Acceptable:** one layout container inside `.page`; CSS Grid for columns; `<aside>` for side columns; `min-width: 0` on the fluid column; sticky rails; cards built from tokens.
-- **Not acceptable:** a second `max-width`/centred wrapper inside `.page`; absolute positioning to fake columns; fixed pixel heights on content; a side column that does not collapse on small screens; a main column without `min-width: 0` (it will overflow on long code lines).
+- **Acceptable:** one layout container inside `.page`; CSS Grid for columns; `<aside>` for side columns; `min-width: 0` on the fluid column; `minmax(0, 1fr)` on card-grid tracks; sticky rails; cards built from tokens.
+- **Not acceptable:** a second `max-width`/centred wrapper inside `.page`; absolute positioning to fake columns; fixed pixel heights on content; a side column that does not collapse on small screens; a main column without `min-width: 0`, or a card grid on a bare `1fr` track (both overflow on long code lines - the track's automatic minimum is the item's min-content width, and a code block never wraps).
 {% endraw %}
 </div>
 
diff --git a/tests/conftest.py b/tests/conftest.py
index 9d78ac5b..dbfc8ef0 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -290,6 +290,35 @@ def assert_share_copies(page, expected_fragment):
         )
 
 
+def assert_no_horizontal_overflow(page, layout):
+    report = page.evaluate(
+        """(selector) => {
+            const root = document.documentElement;
+            const container = document.querySelector(selector);
+            const widest = [];
+            document.querySelectorAll("body *").forEach((el) => {
+                if (el.getBoundingClientRect().right <= root.clientWidth + 1) return;
+                widest.push(
+                    el.tagName.toLowerCase() + "." + (el.className || "").toString().trim()
+                );
+            });
+            return {
+                page: root.scrollWidth - root.clientWidth,
+                layout: container ? container.scrollWidth - container.clientWidth : null,
+                widest: widest.slice(0, 5),
+            };
+        }""",
+        layout,
+    )
+    assert report["layout"] is not None, f"{layout} not found"
+    assert report["page"] <= 1, (
+        f"page scrolls horizontally by {report['page']}px: {report['widest']}"
+    )
+    assert report["layout"] <= 1, (
+        f"{layout} overflows its own width by {report['layout']}px: {report['widest']}"
+    )
+
+
 @pytest.fixture(scope="session")
 def seeded_db(app_server):
     """Create test users once at session level using requests directly."""
diff --git a/tests/e2e/feed.py b/tests/e2e/feed.py
index 4c825d07..0b4072f7 100644
--- a/tests/e2e/feed.py
+++ b/tests/e2e/feed.py
@@ -37,7 +37,11 @@ def _goto_feed_until(page, predicate, timeout=5.0):
 import re
 from uuid import uuid4
 from datetime import datetime, timedelta, timezone
-from tests.conftest import BASE_URL, assert_share_copies
+from tests.conftest import (
+    BASE_URL,
+    assert_no_horizontal_overflow,
+    assert_share_copies,
+)
 from devplacepy.database import get_table
 from devplacepy.utils import make_combined_slug
 def _seed_posts(count):
@@ -965,3 +969,58 @@ def test_feed_scroll_not_restored_on_fresh_visit(alice):
     page.goto(f"{BASE_URL}/feed", wait_until="domcontentloaded")
     page.wait_for_timeout(600)
     assert page.evaluate("window.scrollY") < 60
+
+
+def _seed_post_with_long_code_line(topic="devlog"):
+    owner = str(uuid4())
+    get_table("users").insert(
+        {
+            "uid": owner,
+            "username": f"code_{owner[:8]}",
+            "email": f"{owner[:8]}@code.seed",
+            "password_hash": "x",
+            "role": "Member",
+            "is_active": True,
+            "created_at": datetime.now(timezone.utc).isoformat(),
+        }
+    )
+    uid = str(uuid4())
+    marker = f"longcode-{uid[:8]}"
+    line = "unbreakable_identifier_" * 10
+    get_table("posts").insert(
+        {
+            "deleted_at": None,
+            "deleted_by": None,
+            "uid": uid,
+            "user_uid": owner,
+            "slug": make_combined_slug(marker, uid),
+            "title": marker,
+            "content": f"```python\n{line}\n```",
+            "topic": topic,
+            "project_uid": None,
+            "image": None,
+            "stars": 0,
+            "created_at": datetime.now(timezone.utc).isoformat(),
+        }
+    )
+    return marker
+
+
+def test_feed_long_code_line_does_not_widen_layout(alice):
+    page, user = alice
+    marker = _seed_post_with_long_code_line()
+    page.goto(f"{BASE_URL}/feed", wait_until="domcontentloaded")
+    card = page.locator(".post-card").filter(has_text=marker).first
+    card.wait_for(state="visible")
+    assert card.locator("pre").count() == 1
+    assert_no_horizontal_overflow(page, ".feed-layout")
+
+
+def test_dashboard_long_code_line_does_not_widen_layout(alice):
+    page, user = alice
+    marker = _seed_post_with_long_code_line()
+    page.goto(f"{BASE_URL}/", wait_until="domcontentloaded")
+    card = page.locator(".dashboard-post-card").filter(has_text=marker).first
+    card.wait_for(state="visible")
+    assert card.locator("pre").count() == 1
+    assert_no_horizontal_overflow(page, ".dashboard-main")
diff --git a/tests/e2e/gists.py b/tests/e2e/gists.py
index d08370b5..030a759b 100644
--- a/tests/e2e/gists.py
+++ b/tests/e2e/gists.py
@@ -6,7 +6,11 @@ import requests
 from uuid import uuid4
 from datetime import datetime, timedelta, timezone
 from playwright.sync_api import expect
-from tests.conftest import BASE_URL, assert_share_copies
+from tests.conftest import (
+    BASE_URL,
+    assert_no_horizontal_overflow,
+    assert_share_copies,
+)
 from devplacepy.database import get_table
 from devplacepy.utils import make_combined_slug
 DPBOT_SIZE = 112147
@@ -473,3 +477,46 @@ def test_gists_list_preserves_comment_hierarchy(page, app_server):
     expect(card.locator(".post-card-comments")).not_to_contain_text(f"{marker}-excluded")
     nested = card.locator(".post-card-comments .comment-replies .comment-text")
     expect(nested).to_contain_text(f"{marker}-reply")
+
+
+def _seed_gist_with_long_code_line():
+    owner = str(uuid4())
+    get_table("users").insert(
+        {
+            "uid": owner,
+            "username": f"gcode_{owner[:8]}",
+            "email": f"{owner[:8]}@gcode.seed",
+            "password_hash": "x",
+            "role": "Member",
+            "is_active": True,
+            "created_at": datetime.now(timezone.utc).isoformat(),
+        }
+    )
+    uid = str(uuid4())
+    marker = f"gistcode-{uid[:8]}"
+    line = "unbreakable_identifier_" * 8
+    get_table("gists").insert(
+        {
+            "deleted_at": None,
+            "deleted_by": None,
+            "uid": uid,
+            "user_uid": owner,
+            "slug": make_combined_slug(marker, uid),
+            "title": marker,
+            "description": f"```python\n{line}\n```",
+            "source_code": "print('x')",
+            "language": "python",
+            "stars": 0,
+            "created_at": datetime.now(timezone.utc).isoformat(),
+        }
+    )
+    return marker
+
+
+def test_gists_long_code_line_does_not_widen_layout(page, app_server):
+    marker = _seed_gist_with_long_code_line()
+    page.goto(f"{BASE_URL}/gists", wait_until="domcontentloaded")
+    card = page.locator(".gist-card").filter(has_text=marker).first
+    card.wait_for(state="visible")
+    assert card.locator("pre").count() == 1
+    assert_no_horizontal_overflow(page, ".gists-layout")
diff --git a/tests/e2e/profile/index.py b/tests/e2e/profile/index.py
index 4be2a835..746ba860 100644
--- a/tests/e2e/profile/index.py
+++ b/tests/e2e/profile/index.py
@@ -2,7 +2,7 @@
 
 from playwright.sync_api import expect
 
-from tests.conftest import BASE_URL
+from tests.conftest import BASE_URL, assert_no_horizontal_overflow
 
 CONSENT = "ai_third_party"
 
@@ -65,3 +65,23 @@ def test_a_stranger_never_reaches_the_privacy_panel(bob):
     )
     expect(page.locator(".privacy-panel")).to_have_count(0)
     expect(page.locator("form[action='/profile/alice_test/consent']")).to_have_count(0)
+
+
+def test_profile_mobile_long_code_bio_does_not_widen_layout(mobile_page):
+    page, user = mobile_page
+    bio = "```python\n" + "unbreakable_identifier_" * 8 + "\n```"
+    page.request.post(
+        f"{BASE_URL}/profile/update",
+        form={"bio": bio, "location": "", "git_link": "", "website": ""},
+    )
+    try:
+        page.goto(
+            f"{BASE_URL}/profile/{user['username']}", wait_until="domcontentloaded"
+        )
+        page.locator(".profile-sidebar pre").first.wait_for(state="visible")
+        assert_no_horizontal_overflow(page, ".profile-layout")
+    finally:
+        page.request.post(
+            f"{BASE_URL}/profile/update",
+            form={"bio": "", "location": "", "git_link": "", "website": ""},
+        )