Latency is the dominant signal for W1 (sub-second response to typing)
and on a typing-focused device the reMarkable 2 + Type Folio's e-ink
delay disqualifies a 2. Updates the TikZ perception array, the table
row + rationale, and the totals narrative (reMarkable 45 → 44, ranking
unchanged).
Two stale bits in §4's preamble. (a) "15×15 roof matrix" still
referenced H14's pre-retirement column count — corrected to 14×14.
(b) The symbol legend named classical QFD glyphs (◎ ○ × ⊗) but
quality-house.md's roof actually renders ASCII (++ + − −−). Both
listings now lead with the ASCII glyphs that match the source of
truth, with classical equivalents kept in parens.
GLOSSARY.md was reachable only via docs/qfd.md's §2 preamble.
Surfacing it from README adds two entry points: the intro and
software-stack pointers to docs/qfd.md now follow up with a link
to GLOSSARY.md (the ontology layers used across the docs), and
the repo-layout block lists GLOSSARY.md alongside CONTEXT.md so
the two glossaries' division of labour — device vocab vs
methodology vocab — is visible at a glance.
The H10-H15 mild conflict node still pointed at C-10-15 (H15's
pre-retirement column). H14's removal renumbered H15 to column 14,
so the roof coordinate becomes C-10-14. Missed in the earlier
sweep — comment line already says "H10-H15" so the intent was
unchanged, only the cell coord was stale.
The doc previously conflated functions (transformations the device
performs) with characteristics (measurable attributes). Surfacing
Functions as their own ontology layer makes HOW names — which pack
a function reference plus an attribute — readable without function
definitions staying implicit.
- new GLOSSARY.md at root: 5-layer ontology stack (WHAT / Function /
Characteristic / Metric+Unit / Target), peer to CONTEXT.md
(device-specific vocabulary)
- qfd.md §2 opens with a Functions inventory (Type, Save, Publish,
Recover, Boot, Provision); Render and Reconnect noted as
sub-functions; Provision flagged as build-time-only in v0.1
- H1 "Keypress → glyph latency" → "Type latency (keypress → glyph)"
- H4 "Cold boot → cursor ready" → "Boot latency (cold)"
(the arrow transformation moves to the Functions inventory; the
parenthetical keeps the residual qualifier)
- cascade through §3 priority list, §6 critical-performance-budget
rows for H1/H4, §8 inconsistencies, and quality-house.md TikZ
column labels
Matrix cell strengths held; no Σ recompute.
Module count / public-API surface is a static source-code property,
not a runtime function nor an artifact characteristic like H10 binary
or H15 build time. It was a refactor-leverage proxy for W9 — proxies
of proxies belong in the ADRs and the component matrix, not in the
HoQ. Removed from §2, §5 matrix, §4 conflict list, and the C12
overloaded-list mention; basement Σ total drops 1674 → 1557 so rel%
recomputed in quality-house.md.
The post's job is to land the timing question and the apocalypse
reframe — Wi-Fi rationale, optimisation diversions, and generalising
reflections were overexpansion. Cut.
The user-meaningful moment of a Publish is when the local commit
lands (~0.2 s), not when the push completes (~5–10 s). New principle
in CONTEXT.md, instantiated in v0.1 product doc with staged status
transitions and a corrected on-demand Wi-Fi status example.
Long-form rationale for the "durability before delivery" framing —
why a 10-second network operation in response to a single keystroke
doesn't have to feel slow. Establishes docs/notes/ as the home for
shareable design rationale (not authoritative spec).
Always-on station mode burns ~410 mAh/day on the radio alone; on-demand
drops that to ~25 mAh/day at 10 Publishes/day. Radio comes up on Ctrl-G
with a 10 s association timeout, holds for a ~90 s grace window after
each Publish, then tears down. SNTP cached up to 24 h to avoid
re-querying every Publish.
Also removes stale SoftAP provisioning bullets that contradicted the
"v0.1 has no provisioning module" stance later in the same doc.
The user's mental model of Publish is a Google Doc backed by git, not a
curated commit log. Branches fall out of scope under that framing; the
device tracks one stream of work on whichever branch the remote was
cloned on, and never switches. Drops :Gbranch from v0.7 to match.
Captures "I can carry the device and write away from a desk" as a
distinct WHAT from W11 (multi-day battery), weight 8. Recomputed
basement Σ (1546→1674); H8 climbs #6→#3 in the §3 priority list as
its voter base widens to include W14, and H12 enters the top six at
#4. §6's "(b) narrow voter base" override for H8 is retired and a new
§7 ADR-008 vs W11+W14 unresolved-conflict bullet records that wall
power in v0.1 now disappoints two WHATs, not one.
reMarkable 2 with Type Folio tested less responsive than Freewrite Smart
Typewriter (Sailfish). With Smart at 3, reMarkable drops one notch to 2.
Total: reMarkable 42 → 41, now tied with Smart at 41.
Sailfish ships on Smart Typewriter Gen 3 as well as Traveler, so the
same firmware-driven bumps apply: W1 2→3 (Smart still trails Traveler
by one notch on panel size), W5 3→4, W9 1→2. Smart total 38 → 41.
Project gets a proper name. Replaces "Ours" / "Our product" placeholders
in the QFD perception zone and the working title "typewriter" in
README/CONTEXT headers and the npm name. "Typewriter" the category
noun (the writing-machine concept) stays unchanged — Typoena is the
brand, typewriter is the category. SoftAP SSID typewriter-setup and the
repo directory are deliberately left as-is.
The Sailfish firmware (2025-11-19) rewrote the Freewrite Traveler OS in
Rust, cut keystroke latency 40–100 %, and trimmed power draw -30 %
typing / -50 % idle. Three rows are bumped: W1 3→4, W5 3→4, W9 1→2.
Freewrite now ties reMarkable at 42; Pomera still #2 at 45.
text width={\qfdWhatW - 0.2}cm doesn't parse — the braces don't
evaluate the arithmetic, so TikZ sees "4.6 - 0.2cm" which isn't a
valid dimension. Pre-compute the narrower width with
\pgfmathsetmacro and reference the resulting macro instead.
Text box anchored at qfdLeftEdge + 0.1 with width qfdWhatW overflowed
0.1 cm past the cell's right edge into the Weight column, clipping
trailing words like "the", "lag,", "hob-". Shrink the box by 0.2 cm
so it has 0.1 cm clearance on both sides.
Spell out the Normal-vs-Insert distinction (relative with current line
absolute / absolute everywhere) so it's clear the gutter behaves like
Neovim's number+relativenumber combo, not flat absolute numbering.
Each product now gets a profile line across all WHATs using the same
colour and dash pattern its legend entry already advertises, so the
shape of each competitor's strengths/weaknesses is readable at a glance
instead of having to mentally connect the dots.
Raise the header zone (qfdHdrH 3.2 → 4.2) so rotated HOW labels stop
crossing into the roof diamond grid, and wrap the perception title onto
two lines via text width so it stays inside its zone instead of bleeding
left over the H14/H15 column labels.
Drop the duplicated 13x15 strength matrix and 15x15 roof tables from
qfd.md; the same data already lives in quality-house.md's TikZ source.
qfd.md §3/§4 keep the narrative reading (priority list, conflict list)
and point to quality-house.md for the cells and basement sums. Both
files' regenerate/maintenance notes flipped to reflect the new contract.
Renders qfd.md §1-§4 as a classical House of Quality with 13 WHATs x 15
HOWs, roof correlations, and a perception zone scoring reMarkable 2,
Freewrite Traveler, and Pomera DM250 against the v0.1 target. Scores are
guessed, not measured; rationale and caveats are in the doc.
Pulls the scattered refresh-strategy facts (1-in-20 ghost-flush, defer to
idle ≥ 1 s, full refresh on Ctrl-S/Ctrl-G) into one user-facing paragraph
so future readers know what scroll actually looks like on this panel and
the periodic ~1 s flash is documented intent, not a bug to chase.
The old ADR documented the specific panel choice (GDEY0579T93 + DESPI-c579)
as if it were a freshly weighed option, but the hardware was already on
hand — the real architectural decision was choosing the medium (e-ink over
FSTN graphical / Sharp Memory LCD / OLED-TFT). Rewrite the ADR around the
medium with the panel as instantiation, note the Freewrite Alpha (2023)
data point as honest expectation-setting, and propagate the anchor /
narrative changes through qfd.md, v0.1-mvp-product.md, and README.md.
Move light/dark theme from v1.x stretch into v1.0 Polish as a
runtime-switchable, persisted setting, and extend font selection to
cover adjustable font size with the same persistence. Drop spell-check
from the stretch list — no longer in scope.
Convert every `ADR-NNN` mention in qfd.md to a `[ADR-NNN]` shortcut
reference and add the link definitions at the bottom of the file, so
each ADR mention navigates to the matching adr.md section.
- Re-anchor W1..W4 source links to the renumbered v0.1 user stories
(story 1 "First run" was deleted in the v0.1 refresh).
- W2 now points at ADR-010 and CONTEXT.md as well as the product spec.
- W4 reframed from "first-run setup" to "one-shot provisioning, never
repeated mid-session" so it covers both the v0.1 build-time path and
the v0.9 on-device path.
- ADR-005 tradeoff row rewritten: "captive-portal form" was wrong after
the v0.1 refresh; replaced with the binary-as-secret-store framing.
- New ADR-010 row in the tradeoffs table.
- Read-across notes flag that C12 owns ADR-010's implementation but not
its UX contract, and that C11 LittleFS is unused in v0.1.
- Section 8 picks up three new cross-doc inconsistencies that were
spotted and fixed during the refresh (commit-message format mismatch,
captive-portal vs. solo target user, vocabulary leak resolved by
CONTEXT.md).
Two coupled changes that emerged from one /deep-design session, both touching
the same v0.1 paragraphs:
(1) Align Ctrl-G with the user's existing gct shell alias: git add . ->
short-circuit if nothing staged -> commit with an ISO-8601 timestamp (no
wip prefix) -> push -> on push failure, git pull --no-edit then retry.
Atomic from the user's view. Recorded as ADR-010. The previously-planned
v0.7 commit-message-prompt item is removed; it contradicts the
gct/timestamp model.
(2) Replace the v0.1 captive-portal first-run with build-time env-var
config: build.rs reads TW_* env vars and embeds them as constants. No
NVS read, no LittleFS mount, no AP mode, no HTTP server. The v0.1
target user is the dev themselves; the first release usable by non-dev
users is v0.9, and the v0.9 settings entry is reframed accordingly.
ADR-005 updated to describe the build-time path and the v0.9 migration.
The two changes share files because the v0.1 spec is one interlocked
document; splitting further would require line-level surgery without
improving auditability.
CONTEXT.md fixes the project's user-facing vocabulary (Tracked, Local,
Save, Publish) and the principles that fall out of those definitions
(the device is a writing tool, not a sync engine; it does no git work
the user did not explicitly request). README's file-scopes section and
repo-layout listing point at the new glossary so a first-time reader
lands on canonical definitions, and the ADR log carries an inbound link
so future ADRs can rely on the same terms.
The original row collapsed C and C++ together, but they trade differently
on the ESP-IDF target (RAII, generics, binary size, exception story). Split
them so the language-and-runtime decision actually reflects what was
considered.
