docs(journal): plan Campaign QJ — the two tabs QT deliberately left inert

The Journal tab is not a quest feature at all: it is a per-character notebook,
entirely client-side, with no wire and no dat content. Each page holds a label,
a title, notes, a recorded location and a countdown timer, and the Page List
tab is a searchable index over them. It shares the panel with Contracts and
nothing else — retail's own naming, not a mix-up here.

The file format is recovered whole, including the detail that a journal file
which does not open with <NEWP> is REFUSED with its own error string, and the
authored max lengths (16 label / 32 title / 2048 notes) that the edit boxes
enforce.

One authored fact worth recording before anyone reads the layout as a bug: the
running-timer readout shares x=84 with the three day/hour/minute fields. That
overlap is the data form of ShowEditableTimer versus ShowRunningTimer — the
strip is either three editable numbers or one running readout, never both.

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

docs/plans/2026-08-21-journal-campaign.md

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+# Campaign QJ — the Journal and Page List tabs
+
+**Status:** ACTIVE 2026-08-21. Completes the panel Campaign QT mounted: QT
+shipped the Contracts tab and left the other two inert by design.
+
+**Scope:** retail's `gmJournalUI` (element type `0x10000048`, page
+`0x10000563`) and `gmPageListUI` (type `0x10000049`, page `0x10000564`).
+
+## What this actually is
+
+A **per-character notebook**, entirely client-side. No wire, no server
+involvement, no dat content — the player writes the pages. Each page carries a
+label, a title, free-form notes, a recorded LOCATION, and a countdown TIMER.
+The Page List tab is a searchable index over those pages.
+
+Nothing about it depends on quests; it shares the panel with Contracts and
+nothing else. That it is called "Journal" while the panel is also called
+"Journal" is retail's own naming, not a mistake here.
+
+## Measured ground truth
+
+### The file format
+
+`gmJournalUI::SavePages @0x00497270` / `LoadPages @0x00496AC0`. A plain tagged
+text file, `fopen` mode `w+`. Both call sites pass the literal prefix
+`"Journal"`; the path template is `%s%s-%s-%s.txt`, i.e.
+`{dir}Journal-{server}-{character}.txt`.
+
+```
+<NEWP>            begins a page (a file that does not open with one is refused)
+<PNUM> %d         page number
+<LABE> %s         label      (authored max length 16)
+<TITL> %s         title      (32)
+<NOTE> %s         notes      (2048)
+<DAYS> %d         timer days
+<HOUR> %d         timer hours
+<MINU> %d         timer minutes
+<LOCX> %f         recorded location
+<LOCY> %f
+<TIME> %f         running-timer value
+```
+
+Retail's own load error, byte-decoded: `"Problem loading journal: Your journal
+file does not create a new page!"`
+
+### The Journal page (`0x10000563`)
+
+| Element | Role |
+|---|---|
+| `0x10000567` | "New" button |
+| `0x10000569` | label edit box (`0x1E` = 16) |
+| `0x1000056A` / `0x1000056B` | "Title:" / title edit box (32) |
+| `0x1000056C` / `0x1000056D` | "Notes:" / notes edit box (2048), scrollbar `0x1000056E` |
+| `0x1000056F` / `0x10000570` / `0x10000571` | "First" / "~ 1 ~" / "Last" |
+| `0x10000572` / `0x10000573` / `0x10000574` | "Location:" / "00.0S, 00.0W" / "Record" |
+| `0x10000575` | "Timer:" |
+| `0x10000576` `0x10000577` | days field, "d" |
+| `0x10000578` `0x10000579` | hours field, "h" |
+| `0x1000057A` `0x1000057B` | minutes field, "m" |
+| `0x1000057C` | running-timer text — OVERLAPS the three fields at x=84 |
+| `0x1000057D` | "Start" button |
+| `0x10000566` | bottom-right button (65x32) |
+
+`0x1000057C` sharing x=84 with the day/hour/minute fields is the authored form
+of `ShowEditableTimer @0x00495770` vs `ShowRunningTimer`: the same strip is
+either three editable numbers or one running readout, never both.
+
+### The Page List page (`0x10000564`)
+
+| Element | Role |
+|---|---|
+| `0x1000057F` `0x10000580` `0x10000581` `0x10000582` | headers "#" / "Title" / "Timer" / "Label" |
+| `0x10000583` | the list, scrollbar `0x10000584` |
+| `0x10000585` | "Delete" |
+| `0x10000586` / `0x10000587` / `0x10000588` | "Search:" / search box / "Reset" |
+
+`gmPageListUI::PageContainsString @0x00493B60` is the search predicate;
+`CheckForDoubleClick @0x00493140` opens the page
+(`gmJournalUI::GotoPage @0x00496430`).
+
+## Slices
+
+- **QJ1 — the page model and its file.** `JournalPage` plus a faithful
+  reader/writer for the tagged format, including retail's refusal of a file
+  that does not open with `<NEWP>`. Pure; no UI, no state ownership.
+- **QJ2 — the owner.** `RuntimeJournalState`: the page collection, the current
+  page, new/delete/goto, and the timer. Per-character.
+- **QJ3 — the Journal page.** Edit boxes, page navigation, Record, and the
+  editable/running timer swap.
+- **QJ4 — the Page List page.** The list, the search, delete, and
+  double-click-to-open.
+- **QJ5 — persistence.** Load on character enter, save on exit, under the
+  client's own data directory.
+
+## Definition of done
+
+1. A page written in one session is there in the next.
+2. Every ported algorithm cites its retail address.
+3. Every slice has a test that would catch its regression.