docs: close the GUI layout review, release 0.16.0

Stage 9 of the GUI layout plan: the roadmap item the review was raised
under is closed, so the plan and the findings document go with it — what
they established now lives in STANDARDS and the CHANGELOG.

STANDARDS gains the rule the review produced: a size that must follow the
theme is measured at build time, not written as a pixel constant, because
a hand-tuned number is only correct for the theme it was tuned against.
rowOverlap, captionColumnWidth, textColumnWidth, activityRowsHeight and
initialSplitOffset are the worked examples.

The CHANGELOG entry keeps to what the user can see: the window opens at
the size it asks for and drags smaller, the Jobs divider is draggable,
History columns hold their content on a scaled UI, and the Settings
button row and block spacing are as their layouts intended.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

docs/CHANGELOG.md

@@ -2,6 +2,51 @@
 
 All notable GoSentry changes are recorded in this file.
 
+## 0.16.0 - 2026-07-27
+
+**The window opens at the size it asks for, and the Jobs divider can be
+dragged.**
+
+**Window:**
+
+- **The window opens at 1024×660 and can now be dragged narrower than it opens.**
+  Fyne treats the assembled content's minimum size as a hard floor over the
+  requested size, and two widgets in Settings pushed that minimum past 1024 px:
+  a fixed width applied to seven controls that the layout already stretched, and
+  the read-only config path, which grew the whole tab with the length of the
+  path it was showing — a 75-character path alone demanded 1501 px. The path now
+  clips when the window is genuinely narrow instead of widening the window, and
+  the content minimum is 972 px.
+
+**Jobs:**
+
+- **The divider between the job list and the details pane is draggable.**
+  Previously the list was pinned at its natural width and the details pane took
+  whatever was left, so a long command or a deep folder path could not be given
+  more room. Either pane can now be widened at the other's expense, and neither
+  can be dragged below its own content, so the details pane condenses rather
+  than clipping. The divider opens at the list's natural width; its position is
+  not saved, so a restart reopens at that default.
+
+**History:**
+
+- **Columns measure their own content.** Time, Trigger and State were fixed
+  pixel widths with as little as 1.6 px of headroom and truncated their own
+  values on a scaled UI or at a larger text size; all five now size themselves
+  from the text they have to show, under the current theme. Job and Detail stay
+  bounded so one long row cannot take over the table.
+
+**Settings:**
+
+- The **Save / Cancel / Restore defaults** row sits 4 px from the left edge, as
+  its layout always intended, rather than 8.
+- The caption column is as wide as the widest caption instead of a fixed width,
+  which gives each value column about 22 px more and keeps the captions readable
+  at a larger text size.
+- The **Application** and **About** blocks are about 2 px tighter: every stacked
+  row group in the app now shares one spacing derived from the theme rather than
+  three separately tuned numbers.
+
 ## 0.15.0 - 2026-07-26
 
 **Settings points at the jobs file itself, not the folder holding it.**