feat(conversation): follow active reasoning while preserving manual reading

src/renderer/src/workbuddy/conversation/source-styles.css

@@ -5,3 +5,11 @@
  * Runtime/ASAR mismatches remain recorded in the source manifest.
  */
 .chat-pane.cr-theme{--cb-font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;--cb-font-family-mono:"Menlo", "Monaco", "Courier New", monospace;--cb-spacing-xs:4px;--cb-spacing-sm:8px;--cb-spacing-md:12px;--cb-spacing-lg:16px;--cb-spacing-xl:20px;--cb-spacing-xxl:24px;--cb-border-radius-sm:4px;--cb-border-radius-md:6px;--cb-border-radius-lg:8px;--cb-border-radius-xl:16px;--cb-border-radius-2xl:24px;--cb-transition-fast:.15s ease;--cb-transition-base:.2s ease;--cb-transition-slow:.3s ease;--cb-z-index-dropdown:100;--cb-z-index-modal:1000;--cb-z-index-modal-confirm:100001;--cb-z-index-tooltip:1100;--cb-vscode-editor-background:var(--vscode-editor-background,#fff);--cb-vscode-sideBar-background:var(--vscode-sideBar-background,#f3f3f3);--cb-vscode-input-background:var(--vscode-input-background,#fff);--cb-vscode-dropdown-background:var(--vscode-dropdown-background,#fff);--cb-vscode-foreground:var(--vscode-foreground,#333);--cb-vscode-editor-foreground:var(--vscode-editor-foreground,#4c4f69);--cb-vscode-titleBar-activeBackground:var(--vscode-titleBar-activeBackground,#ddd);--cb-vscode-titleBar-activeForeground:var(--vscode-titleBar-activeForeground,#333);--cb-vscode-titleBar-inactiveBackground:var(--vscode-titleBar-inactiveBackground,#ddd);--cb-vscode-titleBar-inactiveForeground:var(--vscode-titleBar-inactiveForeground,#666);--cb-titlebar-control-hover-background:#0000000f;--cb-vscode-descriptionForeground:var(--vscode-descriptionForeground,#717171);--cb-vscode-widget-border:var(--vscode-widget-border,#e1e1e1);--cb-vscode-panel-border:var(--vscode-panel-border,#e1e1e1);--cb-vscode-list-hoverBackground:var(--vscode-list-hoverBackground,#f0f0f0);--cb-vscode-toolbar-hoverBackground:var(--vscode-toolbar-hoverBackground,#f0f0f0);--cb-vscode-button-background:var(--vscode-button-background,#007acc);--cb-vscode-button-foreground:var(--vscode-button-foreground,#fff);--cb-vscode-button-hoverBackground:var(--vscode-button-hoverBackground,#0062a3);--cb-vscode-scrollbarSlider-background:var(--vscode-scrollbarSlider-background,#c1c1c1);--cb-vscode-scrollbarSlider-hoverBackground:var(--vscode-scrollbarSlider-hoverBackground,#a8a8a8);--cb-vscode-textLink-foreground:var(--vscode-textLink-foreground,#006ab1);--cb-panel-bg-primary:var(--vscode-editor-background,#fff);--cb-text-primary:#333;--cb-text-secondary:#666;--cb-text-disabled:#0000004d;--cb-text-link:#006ab1;--cb-stroke-secondary:#d8dee4;--cb-markdown-hr-border-color:#ebebeb;--cb-bg-primary:#0000000d;--cb-bg-secondary:#f5f5f5;--cb-team-member-card-background:#f5f5f5;--cb-team-member-icon-background:#f5f5f5;--cb-button-dark-background:#1a1a1a;--cb-button-dark-foreground:#fff;--cb-button-dark-hover-background:#333;--cb-text-error-active:#b42c3f;--cb-button-danger-secondary-fg:#b42c3f;--cb-text-link-hover:#0e58a0;--cb-text-solid:#000;--cb-bg-primary-hover:#ebebeb;--cb-bg-primary-active:#f2f2f2;--cb-border-secondary:#ebebeb;--cb-shadow-popover:0 6px 24px 0 #0000000a, 0 4px 6px 0 #0000000a;--cb-border-drag-indicator:#1470b4;--cb-tooltip-bg:#000000b3}.chat-pane.cr-theme[data-cr-theme=dark]{--cb-vscode-editor-background:var(--vscode-editor-background,#1e1e1e);--cb-vscode-sideBar-background:var(--vscode-sideBar-background,#252526);--cb-vscode-input-background:var(--vscode-input-background,#3c3c3c);--cb-vscode-dropdown-background:var(--vscode-dropdown-background,#3c3c3c);--cb-vscode-foreground:var(--vscode-foreground,#ccc);--cb-vscode-editor-foreground:var(--vscode-editor-foreground,#ccc);--cb-vscode-titleBar-activeBackground:var(--vscode-titleBar-activeBackground,#3c3c3c);--cb-vscode-titleBar-activeForeground:var(--vscode-titleBar-activeForeground,#ccc);--cb-vscode-titleBar-inactiveBackground:var(--vscode-titleBar-inactiveBackground,#3c3c3c);--cb-vscode-titleBar-inactiveForeground:var(--vscode-titleBar-inactiveForeground,#999);--cb-titlebar-control-hover-background:#ffffff14;--cb-vscode-descriptionForeground:var(--vscode-descriptionForeground,#9d9d9d);--cb-vscode-widget-border:var(--vscode-widget-border,#414141);--cb-vscode-panel-border:var(--vscode-panel-border,#3c3c3c);--cb-vscode-list-hoverBackground:var(--vscode-list-hoverBackground,#2a2d2e);--cb-vscode-toolbar-hoverBackground:var(--vscode-toolbar-hoverBackground,#353535);--cb-vscode-button-background:var(--vscode-button-background,#0e639c);--cb-vscode-button-foreground:var(--vscode-button-foreground,#fff);--cb-vscode-button-hoverBackground:var(--vscode-button-hoverBackground,#17b);--cb-vscode-button-secondaryBackground:var(--vscode-button-secondaryBackground,#3a3d41);--cb-vscode-button-secondaryForeground:var(--vscode-button-secondaryForeground,#fff);--cb-vscode-button-secondaryHoverBackground:var(--vscode-button-secondaryHoverBackground,#45494e);--cb-vscode-scrollbarSlider-background:var(--vscode-scrollbarSlider-background,#797979);--cb-vscode-scrollbarSlider-hoverBackground:var(--vscode-scrollbarSlider-hoverBackground,#6Line truncated
+
+/* Reasoning owns its small viewport; gestures must not chain into the transcript. */
+.cr-reasoning__scroll { max-height: 200px; overflow-y: auto; overscroll-behavior: contain; overflow-anchor: none; }
+.cr-reasoning__text { display: flow-root; }
+.cr-reasoning__latest { display: block; margin: 4px 0 4px auto; padding: 2px 8px; border: 0; border-radius: 4px; background: transparent; color: var(--conversation-text-secondary, inherit); font: inherit; cursor: pointer; }
+.cr-reasoning__latest:focus-visible, .cr-reasoning__scroll:focus-visible { outline: 2px solid var(--conversation-text-secondary, currentColor); outline-offset: 2px; }
+
+.cr-reasoning[data-follow-state="paused"] .cr-reasoning__scroll { overflow-anchor: auto; }