Read telemetry per docs/design/read-heatmap.md: a ReadLedger over a new
batch-oriented MetaStore ReadRepo (file reads.json + SQL read_stats)
aggregates viewer and share reads into daily per-actor buckets, debounced
to visits, folded into all-time rows past retention. GET /api/p/<id>/heat
serves per-path counts (human/agent/share, distinct readers, last read) —
never identities. /store sync traffic and history blob views are not reads.
The viewer shows heat dots and read counts on folder listings and the file
meta line.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01P5cxPQdSGJnjXCYY9GeWXt
Introduce a pluggable metadata persistence layer: a MetaStore of typed
repositories (AccountRepo, ProjectRepo, OrgRepo, ShareRepo, DeviceRepo).
The five registries keep their in-memory maps + logic and now persist each
change as one record through a repo, instead of rewriting a whole JSON file
inline. The `file` backend (db_file.go) reproduces the exact on-disk JSON
formats, so a running hub loads unchanged. Open*(path) constructors stay as
thin wrappers over the file backend.
Zero behavior change: full webapp suite green; the example hub boots and
existing auth.json/orgs.json/projects.json load and sign-in works.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01R7Q9ZKSZRTdvrSJkYLUmYs
