From e12c239a5be98829ec32386d652c0b0ff9144918 Mon Sep 17 00:00:00 2001
From: Emil Lerch <emil@lerch.org>
Date: Tue, 28 Jul 2026 07:47:58 -0700
Subject: [PATCH] update task status

---
 .kiro/specs/calculator/tasks.md | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/.kiro/specs/calculator/tasks.md b/.kiro/specs/calculator/tasks.md
index 55feff0..478e09a 100644
--- a/.kiro/specs/calculator/tasks.md
+++ b/.kiro/specs/calculator/tasks.md
@@ -89,15 +89,16 @@ function arg commas).
 
 ## Phase 2: Struct Layout & Financial Engines
 
-### Task 2.0: Exact numeric model (Rational + Number union) [NOT STARTED]
+### Task 2.0: Exact numeric model (Rational + Number union) [DONE]
 Design: see design.md 2.7. Requirements: NFR-9.
 
-Motivation (all reproducible today): `0.1 + 0.2` = `0.30000000000000004`,
-`9007199254740993` silently becomes `9.007199254740992e15`, `2^53 + 1` collapses,
-`12 in in ft` = `0.9999999999999998`, `factorial(171)` reports "unknown function".
+Motivation (all of these were reproducible before this task, and are fixed now):
+`0.1 + 0.2` = `0.30000000000000004`, `9007199254740993` silently became
+`9.007199254740992e15`, `2^53 + 1` collapsed, `12 in in ft` =
+`0.9999999999999998`, `factorial(171)` reported "unknown function".
 
 Sequenced as four reviewable commits so structural churn never mixes with
-behavioral change (rationale in design.md 2.7.9):
+behavioral change (rationale in design.md 2.7.9), plus 2.0e for the unit factors:
 
 #### 2.0a: Add the types, wired to nothing [DONE]
 - `engine/src/rational.zig`: `Rational` over `std.math.big.int.Managed`, always
@@ -478,15 +479,15 @@ Remaining subcommands deferred until their engine modules exist.
 - Verify: `0o777 - 0x0f` shows 496 plus hex/oct/bin; `3.14` decimal only;
   `2 + 2` decimal only; `0xFF / 2` = 127.5 decimal only
 
-### Task 5.3: Implement programmer mode TUI view - expression & base display [PARTIAL]
+### Task 5.3: Implement programmer mode TUI view - expression & base display [DONE]
 - Programmer mode accessible via Tab key
-- Multi-base result display (dec signed, unsigned, hex, oct, bin)
+- Multi-base result display (dec signed, unsigned, hex, oct, bin, ASCII)
 - Bit grid with navigation (arrows) and toggling (Space)
-- Width toggle (Ctrl-W cycles 8->16->32->64)
-- Ctrl-B toggles focus between input and bit grid
+- Width toggle (Ctrl-W cycles 8->16->32->64->128)
+- Backtick toggles focus between input and value zone (replaced the original
+  Ctrl-B plan)
 - Expression evaluation through programmer engine
-- DONE: basic passive display + expression input + bit grid toggling
-- NOT DONE: editable fields (see Task 5.3.1)
+- Editable fields delivered by Task 5.3.1
 
 ### Task 5.3.1: Programmer mode editable fields rework [DONE]
 - Replaced `bit_grid_active: bool` with `prog_field: ProgField` enum tracking focused field