Record the field items, fishing and MAIL commits in the session handoff

The handoff lists the four commits for the remaining field items, the
gaps found on the way and the manual test cards, whose backup the
manual-test save writer now produces.

[no-card]

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/SESSION_HANDOFF.md

@@ -1,6 +1,6 @@
 # Recovered Claude session
 
-Latest continuation: see **Headbutt and Rock Smash: 2026-10-02**
+Latest continuation: see **Field items, fishing, Select and MAIL: 2026-10-03**
 at the end of this file. Earlier sections are historical snapshots.
 
 Recovered on 2026-09-23 from the local Claude Code transcript
@@ -1094,3 +1094,74 @@ card to Fait). Not pushed. Manual check: card #51 in "A tester" (the shake
 and tree battles against the original), with
 `test-saves/headbutt.crystal-save.json` from `tests/human-test-saves.test.ts`;
 importing it and headbutting was checked once in Chromium and WebKit.
+
+## Field items, fishing, Select and MAIL: 2026-10-03
+
+Resumed with "continue the plan" on a clean tree after `10e1560`, taking
+board card #27 in four commits (none pushed):
+
+- `4cb4676`: Repel, Super Repel and Max Repel (`wRepelEffect`, the step
+  countdown where `CountStep` calls `DoRepelStep`, `RepelWoreOffScript`,
+  `CheckRepelEffect` after `ChooseWildEncounter`), the Coin Case and Blue
+  Card balances, Sacred Ash (`SacredAshScript`, queued), the Normal and
+  Gorgeous Box trophies (`DecorationIDs`), the Itemfinder
+  (`CheckForHiddenItems` in the world), the Card Key, Basement Key and
+  Squirtbottle (their maps are not open; tested with a start-menu run and
+  the interpreter). `text_ram` of the player's, rival's and Mom's names now
+  reads the text context. Saves gained `repel`, `coins` and
+  `blueCardBalance`. New `tests/field-items.test.ts` and the shared
+  `tests/menu-driver.ts`.
+- `397dcef`: the three rods (`FishFunction` in the world, `scripts/fish.ts`
+  for `Fish`/`TimeFishGroups`, the map header's `fishGroup`), `loademote`,
+  `loadmem hBGMapMode`, `Fishing_CheckFacingUp`, `PutTheRodAway` (after the
+  pending text), the actor's fishing action and the renderer's fishing
+  frames (`LoadFishingGFX` tiles in VRAM bank 1; facing offsets are now
+  signed, which the up and left rods need), `BATTLETYPE_FISH`'s "The hooked
+  … attacked!". Wild Magikarp battle now: `CalcMagikarpLength` (compared
+  with the original over 1,509 cases in `tests/reference-parity.spec.ts`)
+  and `LoadEnemyMon`'s rerolls, Lake of Rage bug included. Unown are still
+  refused. Swarms need trainer calls. The four directions were checked in
+  close-up screenshots.
+- `e2dc5ba`: Select in the start menu's pack (`SwitchItemsInBag`: move,
+  merge stacks under 99, B ends the move; GIVE's and the PC's packs ignore
+  Select) with the prompt and a marked row in the UI; left and right on the
+  MOVE screen (`.cycle_left`/`.cycle_right`, skipping Eggs) through a `menu`
+  effect with `sides`. The pack's cursor now stays on the last row chosen.
+- `5c1ac9d` (`Closes #27`; the hook moved it to Fait): MAIL. `party/mail.ts`
+  holds the `mailmsg` struct; it lives on the holding `PartyMon` and in
+  the state's `mailbox`. Giving MAIL opens a two-line entry (the naming
+  effect's `mail` mode), the submenu's MAIL reads (a native letter panel,
+  `#mail-view`) or takes it (to the PC or into the pack), Bill's PC says
+  "Remove MAIL." for deposits and releases, and the player's PC MAIL BOX
+  reads, packs and attaches. A scripted `givepoke` with MAIL is refused.
+  Checked visually at desktop and 390px widths.
+
+Checks: 460 unit tests with the local ROM (3 skipped; 136 passed, 327
+skipped without it; new `tests/mail.test.ts`); 131 Chromium/WebKit
+browser tests passed, 19 skipped intentionally (new Old Rod, Select and
+MAIL flows); native and reference builds; reference, vendor and release
+checks; `git diff --check`. "Tin Tower pillars" in
+`tests/overworld-parity.spec.ts` failed once in Chromium during a full run
+and passed alone and in the later full runs: timing under load. No CI or
+physical-device run.
+
+Gaps found on the way, not on #27:
+- The TM/HM pocket does not exist yet (`receiveItem` throws for TMs and
+  the pack shows an empty TM pocket). Falkner gives TM31, so it is needed
+  with or before #31; no card names it.
+- The MAIL stationery (`MailGFXPointers`) and the Portrait MAIL's picture
+  are not drawn, and the mail entry leaves out `<PK>`, `<MN>`, `<PO>`,
+  `<KE>` and the 'd-'v ligatures.
+- `CountStep`'s poison, happiness, egg, Day-Care and bike steps are not
+  ported; only the Repel step is.
+- #29's description still lists "MAIL storage"; the PC's MAIL BOX was done
+  here, so only its printing remains there.
+
+Manual checks: cards #52 (fishing against the original), #53 (touch
+screens, part of #40) and #54 (screen reader, related to #38) in
+"A tester", with `test-saves/field-items.crystal-save.json` from
+`tests/human-test-saves.test.ts`; importing it and fishing with the Super
+Rod was checked once in Chromium and WebKit.
+
+Next: the remaining battle commands, move effects and Smart AI handlers
+(board #28).