v0.10.0 — sync v3 page tree, AI sessions, database display upgrades

The project is now trame (repo, data dir, remote), the legacy
clients/objectives model is gone, and everything anchors to the one pages tree.

Sync v3 & page tree

Sync protocol 3: the frozen clients entity and objective_id columns
are dropped; hubs and other machines must update before sync resumes.
Sidebar roots split into Projects / Shared with me / Unfiled; pages owned
by another hub user group apart.
Page writer merges revised Markdown into existing blocks so unchanged blocks
keep their ids (and comment anchors); pasted-image assets served from
/api/assets/<id>; /trame:plan-* commands for the plan feedback loop.
Project pages roll up sessions from their child stories.

Claude Sessions becomes AI Sessions: browse local transcripts from any
LLM agent CLI, with a source picker, brand icons, per-project colors, and
one-click filters on project, status, and source.
Resume is copy-to-clipboard of the resume command (terminal launchers
removed); ghostty/KDE tab quirks fixed along the way.

Units on numbers — fixed suffix (2.1 s) or resolved per row from a
sibling select/text column (e.g. a Currency column).
Value-dependent color — fixed swatch, continuous good→bad scale (auto or
manual range, low/high-is-good), or threshold rules; applied as tinted text,
pill, dot, cell wash, or the bar/ring fill.
Hidden columns per view tab — ⊟ Columns popover + Hide in the column
menu; hidden columns keep working in filters, sorts, and formulas.
Full-text modal — text cells expand into a markdown modal with
click-to-edit.

Markdown rendered in page text blocks; bare PR/MR links become state
chips (GitHub + GitLab via glab, including stacked-PR detection).
Pill color autocomplete when typing {{ in page blocks.
Light mode.

Docs move to an Astro Starlight site (docs-site/, just docs) with guided
data-model and sync-flow walkthroughs; release notes live there too.
Curl-able quickstart script installs the packaged release per platform.