test: lay the fixtures out like a real codegen export

.github/workflows/release.yml

@@ -94,7 +94,7 @@ jobs:
         run: |
           for tool in "dist/compare-tool.exe" "python dist/compare_tool.pyz"; do
             set +e
-            $tool tests/fixtures/old tests/fixtures/new --report out.html
+            $tool tests/fixtures/demo/old tests/fixtures/demo/new --report out.html
             code=$?
             set -e
             test "$code" -eq 1 || { echo "::error::$tool exited $code, expected 1"; exit 1; }

.github/workflows/test.yml

@@ -43,7 +43,7 @@ jobs:
         shell: bash
         run: |
           set +e
-          python dist/compare_tool.pyz tests/fixtures/old tests/fixtures/new --report pyz.html
+          python dist/compare_tool.pyz tests/fixtures/demo/old tests/fixtures/demo/new --report pyz.html
           code=$?
           set -e
           test "$code" -eq 1   # fixtures hold real changes
@@ -104,7 +104,7 @@ jobs:
         shell: bash
         run: |
           set +e
-          python -m compare_tool tests/fixtures/old tests/fixtures/new --report report.html
+          python -m compare_tool tests/fixtures/demo/old tests/fixtures/demo/new --report report.html
           code=$?
           set -e
           test "$code" -eq 1  # fixtures contain real changes -> exit code 1 expected

CHANGELOG.md

@@ -5,6 +5,26 @@ All notable changes to this project are documented here. Versions follow
 
 ## [Unreleased]
 
+### Added
+
+- **Fold and resize the panes in the viewer's left column.** The folder tree,
+  the quick-changes rollup and the consistency heads-up each have a bar you can
+  click to fold that pane away and give its height to the others; click again
+  and it comes back the size you left it. All three can be dragged, including
+  the heads-up pane, which was previously pinned at a fixed height.
+
+### Changed
+
+- **Turning off Comment or Unimportant no longer reports those files as
+  Identical.** Their lines still grey out and drop off the minimap and F7/F8,
+  but the file keeps its real verdict everywhere — in the tree, in the counts
+  and in an exported report. `Hide identical` follows suit and hides only files
+  that genuinely have no difference. Previously a file whose comments really
+  had moved could read as Identical on screen while the exported report said
+  otherwise.
+- Improve how the two noise verdicts are marked in the tree, so the report and
+  the viewer no longer show the same file differently.
+
 ## [1.11.0] — 2026-08-22
 
 ### Added

CLAUDE.md

@@ -50,12 +50,24 @@ place, `diff_engine._status_of`.
 Only noise verdicts are foldable (`scanner.FOLDABLE`). `real-change`, `added`,
 `deleted` and `error` can **never** be folded away by a UI toggle.
 
-Folding a category in the viewer changes the file's verdict and **greys** its
-rows (`view_model.mute_rows`) — it does not remove them. The lines stay
-readable, and only the "where should I look next" surfaces (minimap, F7/F8)
-stop counting them. Collapsing them to a `⋯ N lines hidden` placeholder was
-tried and reverted: a regenerated file is mostly banner churn, so it took the
-context the surviving hunks have to be read in.
+**A viewer toggle never changes a verdict.** Unticking `Comment` or
+`Unimportant` **greys** those rows (`view_model.mute_rows`) and drops them from
+the minimap and `F7`/`F8` — nothing else. The file keeps saying Comment, the
+counts keep counting it, and `Hide identical` still leaves it in the tree,
+because it is not identical. Re-judging it to `identical` is what the viewer
+used to do, and it was wrong twice over: the tree then disagreed with the
+exported report about the same file, and "Identical" is the one word a reviewer
+is entitled to read as *nothing differs here at all*.
+
+Removing those rows instead of greying them was tried and reverted too: a
+regenerated file is mostly banner churn, so a `⋯ N lines hidden` placeholder
+took away the context the surviving hunks have to be read in.
+
+Both noise verdicts wear the same `≈` mark, in the report's tree and the
+viewer's alike — they are one answer to "must I read this?", and the label
+beside the mark says which kind of nothing it is. The mark lives once, in
+`view_model.VERDICT_MARK`: the two trees each kept a copy and drifted, so the
+same file read `≉` in one and `≈` in the other.
 
 ## 3. One seam per shared decision
 

compare_tool/qtviewer/advisories.py

@@ -1,6 +1,6 @@
-"""Consistency advisories under the quick-changes panel: the same cross-artifact
-and cross-model heads-up the HTML report and the CLI print, shown live in the
-viewer's bottom-left.
+"""Consistency advisories: the same cross-artifact and cross-model heads-up
+the HTML report and the CLI print, shown live in the viewer's Consistency
+section (last of the three panes in the left column).
 
 Display only, exactly like the report's block -- it names the model and the
 caution, never folds a file, moves a count or changes the exit code. The text
@@ -19,38 +19,38 @@
 
 
 class AdvisoryPanel(QFrame):
-    """Pinned strip at the very bottom of the left column. Hidden outright when
-    there is nothing to say, so a clean compare spends no height on it."""
+    """Body of the left column's Consistency section. Hidden outright when
+    there is nothing to say, so a clean compare spends no height on it -- the
+    section around it goes with it (see MainWindow._show_advisories)."""
 
     def __init__(self):
         super().__init__()
         self.setObjectName('advisorypanel')
         self._advisories = []
 
-        self._header = QLabel()
-        self._header.setObjectName('advisoryhead')
-
         self._body = QLabel()
         self._body.setWordWrap(True)
         self._body.setAlignment(Qt.AlignTop)
         # the messages carry file/model names a reviewer may want to copy into a
         # ticket, and selection never triggers navigation
         self._body.setTextInteractionFlags(Qt.TextSelectableByMouse)
 
-        # bounded height: a folder full of stale models must not eat the tree
-        # above it, so past a few rows the strip scrolls instead of growing
+        # the pane is a section the reviewer can drag, so the height is theirs
+        # to set: the panel fills whatever it is given and scrolls past that.
+        # It used to be capped at 120px from the days it was pinned under the
+        # splitter and could not be resized -- with the cap still in, opening
+        # this pane alone left the text stranded in the middle of an empty
+        # panel with the rest of the height unused.
         scroll = QScrollArea()
         scroll.setWidgetResizable(True)
         scroll.setFrameShape(QFrame.NoFrame)
         scroll.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
-        scroll.setMaximumHeight(120)
         scroll.setWidget(self._body)
 
         lay = QVBoxLayout(self)
         lay.setContentsMargins(8, 6, 8, 8)
         lay.setSpacing(4)
-        lay.addWidget(self._header)
-        lay.addWidget(scroll)
+        lay.addWidget(scroll, 1)
         self.setVisible(False)
 
     def set_advisories(self, advisories):
@@ -61,19 +61,15 @@ def set_advisories(self, advisories):
         if not self._advisories:
             self.setVisible(False)
             return
-        n = len(self._advisories)
-        self._header.setText('⚠ Consistency — {} heads-up{}'.format(
-            n, '' if n == 1 else 's'))
-        # apply_theme owns both the header style and the body render, so the
-        # first show is painted in the current theme without a separate init call
-        self.apply_theme()
+        # no heading of its own: the section bar above already says
+        # "CONSISTENCY  2 heads-ups", and repeating it here spends a row of a
+        # narrow panel restating what the reviewer just read
+        self.apply_theme()   # paints the body in the current theme
         self.setVisible(True)
 
     def apply_theme(self):
-        """Colours are stamped per label, so a theme switch has to repaint them
-        from the advisories the panel was last given."""
-        self._header.setStyleSheet(
-            'color:{}; font-weight:bold;'.format(theme.c('mv-fg')))
+        """Colours are stamped into the body's markup, so a theme switch has to
+        re-render it from the advisories the panel was last given."""
         self._render()
 
     def _render(self):