refactor: add post cache garbage collection and modernize settings store to Svelte 5 state

refactor: resolve Date and Set reactivity lint warnings in state.svelte.ts

refactor: modernize notificationStream, jetstream, and pulsingPostId to Svelte 5 state

docs: add Tech Stack and TanStack Virtualization guidelines to AGENTS.md

refactor: rewrite virtual lists to use TanStack Virtual

bd agents setup

bd init: initialize beads issue tracking

fix load new posts not working properly in replies & following timelines

warming up!

flatten allPosts to make it easier to work with

fix pfp on account switcher not loading on load

optimize thread building a bit more

virtual list timeline, kinda ass but works for now

dont use #await when embedding videos, fixes the 'random' video refreshes

limit how much we show in ui in timelines and reset it on navigation

fix initial loading on timelines

show feed avatar / icon in selector trigger aswell

keep loading more posts if we have less threads

fix feed timelines detecting 'end' correctly

refactor timelines, fix following timeline showing threads that are only replies

dont show threads on following timeline if the root thread is not user we follow

remember last selected feed

add following timeline

refactor timeline component into reply timeline and feed timeline components

add settings fields for pocket and cdn endpoints

check for new posts, show 'load new posts'

fix feed selector icon size

add feed support

cleanup css, allow adding blocks / mutes via handle

add blocks management in moderation tab

refactor settings into separate components

implement mutes

dont set hidden but instead completely unmount timeline when we navigate

this fixes an issue in chromium where if timeline is scrolled down and we navigate away, any other scroll causes the page scroll into overflow territory somehow

post delete state wip

on other user profiles, only fetch thread chains upwards, not downwards

fix interactions not loading on other users profiles

always refetch the latest profile when loading a profile view, also relax cache ttl

better handle if image in record doesnt have aspect ratio

set aspect ratios for uploaded media

dont show empty space if no banner is set, revoke blob urls on post upload

fix image uploads

set alt on images

fix blocks not fetching on profile timelines

fix image gallery not showing on posts

handle pasting and dropping files on composer

implement blocks ui

implement blocks sync

refactor how backlinks are stored

update nix modules hash

implement media attachments