Move the bottom navigation into a dedicated CarpAppShell and make the
redesigned HomePage the landing tab, replacing StudyPage (kept as a
redirect alias). The home page shows the study title, app-update and
connection-status cards, and live days-in-study / tasks-completed
stats from the deployment status and the user task queue.

Tab switches now animate with a fade/scale transition; each tab page
gets a unique page key so the transition actually runs. Informed
consent moves to a root-level route so the bottom bar does not bleed
through. DeviceViewModel bridges device status events into listener
notifications, and nav bar labels are renamed to Home / Statistics /
Connections.

All four tab pages render their title through a shared CarpPageTitle
widget so font and padding stay consistent. The scoreboard on the
tasks page is redundant now that the home page shows the same stats,
so the card and its view-model getters are removed.

The profile page and the device connect flows (Bluetooth and Health)
were pushed onto the shell's nested navigator, leaving the bottom
navigation bar visible. Push them on the root navigator so they cover
the whole screen.

Make the stat tiles compact (label + icon badge on top, value below,
with a completed/total count on the tasks tile), slim the app-update
banner down to a text row with a Get button, and add back a study
status card showing the deployment state with its message.

The deployment status is now refreshed once from the home view model -
it was never fetched before, which kept the status card hidden and
days-in-study at 0. The home page also reuses SurveyCard for a new
Completed Surveys section; the card gets a showTitle flag so its
internal header can be hidden under the page's section heading.

Adds informed-consent download to the profile page, reorders the shell
tabs, and pins the app to the light theme until the dark palette is
done.

CAWS returns invitations in no particular order, so the list reshuffled
on every pull-to-refresh. Sort by study name, deployment id as
tie-breaker. Logs are tagged INVITATIONS to trace duplicate entries.

# Conflicts:
#	pubspec.lock
#	pubspec.yaml

Messages are polled, not pushed, so a new announcement could sit unseen
until the user happened to open the study page. Fire a local notification
for every message id that was not in the previous refresh; the first
refresh only records the backlog so opening the app stays quiet.

A participant invited to two deployments of the same study shares one
participant id across both, so keying the detail route on it made the
second card open the first deployment. Use the study deployment id, the
only id unique per invitation.

Leaving a study no longer clears the invitation list either - invitations
belong to the account, not the study, and clearing them left the list
page spinning forever on a state nothing reloaded.

Consent was a router redirect target, so it was always the only route on
the stack: research_package pops that route itself on cancel, which
emptied go_router and threw. It is now pushed by the app shell, whose
mounting is exactly the precondition - the router only builds it for a
signed-in user with a study - so a pop always has somewhere to land.

Drops the cached tri-state consent status, the consent listener that
configured the study as a side effect, and the redirect rule. The view
model now owns the local flag and the accept / reject decision; the
service is left as a pure CAWS connector.

The app bar pushed the profile imperatively onto the root navigator with
its own PageRoute, bypassing the router and building a throwaway view
model instead of the shared one. Route to it instead, moved out of the
shell since profile is not a bottom-nav tab.

Introduces lib/core (bloc, sensing, CAWS backend, resource managers) and
lib/helpers (config, logging, utils), retiring lib/blocs. View model files
are renamed to *_view_model.dart and each documents, in the same shape,
which page it backs, the state it holds, and its responsibility.

Drops logAppState and its state snapshot, which dumped seventeen lines on
every router redirect, along with the temporary timing logs.

Names the page and its view model after the tab the user actually sees -
StatisticsPage and StatisticsViewModel - matching the naming used
everywhere else. The /data route is unchanged.

Adds a 14-day task completion chart and turns the task and survey rings
into donuts, each section gated on data the study actually has: app
tasks, two or more survey types, or the matching measure in the protocol.
Drops the media and mobility cards.

Every chart now selects the same way - the selected bar or slice stays
solid, the rest fade, and the figures above the chart follow it. Several
had a BarTouchData that was disabled, so their touch callbacks never ran,
and an inverted alpha that lightened the selected bar instead.

Also fixes the survey donut's centre, which counted survey types rather
than completed surveys.

The placeholder data was pre-aggregated maps, so it proved nothing about
the live path. It is now StepCount, PolarHR and Activity measurements
stamped with the time they were taken, folded by the same code that folds
readings off the sampling streams - connecting the real streams changes
where the data comes from and nothing about how it is read.

That aggregation now buckets by each measurement's own timestamp instead
of DateTime.now(), which is also what makes replaying history possible.

Demo data is off on a production deployment, derived from the deployment
mode rather than a flag someone can leave switched on.

Move the message type into a pill above the title so a long title no
longer collides with it, and rebuild the page in the design 2.0 card
style.

Replace the type stripe with a tinted badge, collapse the three card
builders into one shell, and swap the pinned tab header for a segmented
control - its extent could not match TabBar.preferredSize, which broke
the sliver geometry.

Filtering moves to the view model so each tab builds only its own rows
and can show a count and its own empty state.

Title the page Connections to match the nav bar, drop the uppercase
section headings, and align every inset to 16.

Device icons move into the tinted badge the task and feed cards use, and
the FittedBox scale-down wrappers give way to wrapping text so titles
keep a consistent size.

The selected bar could not be unselected, so the fortnight total was
never shown. Selection is now nullable and clears on a second tap, on
empty chart space, or on a tap elsewhere on the card.

The title follows the selection - the fortnight, or the day tapped.