Repair main: register four migrations and rename the board-count hook

The forum-markdown landing (8296157) replaced the board list's .badge count
with a plain span while its own test still selected .badge, and the day's
push races left four migrations (20260825101934, 20260825102408,
20260825113454, 20260825120000) unregistered in the lineage map. Give the
count span a stable id, point the test at it, and register the migrations.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RfZq5s3rc6zpnBR75pTQaU

Co-Authored-By

Claude Fable 5 <noreply@anthropic.com>

Claude-Session

https://claude.ai/code/session_01RfZq5s3rc6zpnBR75pTQaU

Deploy story

What this commit did to the running system — joined from the forge receipt chain, the part a commit page elsewhere cannot show.

pushed

by user · WAL seq 373 · 2026-08-25T12:57:12.586763Z

Changed files

• modified lib/openagents_web/live/forum_home_live.ex
• modified priv/migration_lineages/prior-2026-08-19.json
• modified test/openagents_web/live/forum_live_updates_test.exs

Diff

3 files changed, +11 -4

              >

                <div class="flex items-baseline justify-between gap-3">

                  <h2 class="text-base font-semibold">{forum.title}</h2>

                  <span class="text-sm text-muted-foreground whitespace-nowrap">

                  <span

                    id={"board-topics-#{forum.slug}"}

                    class="text-sm text-muted-foreground whitespace-nowrap"

                  >

                    {forum.topic_count} topics

                  </span>

                </div>

    20260824231951,

    20260825024500,

    20260825054906,

    20260825113459

    20260825101934,

    20260825102408,

    20260825113454,

    20260825113459,

    20260825120000

  ],

  "required_tables": [

    "users",

      {:ok, view, _html} = live(context.conn, ~p"/forum")

      assert has_element?(view, ".badge", "0 topics")

      assert has_element?(view, "#board-topics-general", "0 topics")

      _topic = topic!(board, "The first of them", "the-first-of-them")

      assert has_element?(view, ".badge", "1 topics")

      assert has_element?(view, "#board-topics-general", "1 topics")

    end

    test "the badge is a stored counter, not a collection loaded to measure it",