Closes the silent-failure modes between "ckpool logs a solve" and
"block correctly displayed":
* Difficulty estimate matched mempool.space — the projection now uses
(inEpoch + 1) intervals so it converges on Bitcoin Core's eventual
retarget formula at end-of-epoch instead of undershooting by ~0.05–
0.10 % throughout.
* Tailer resumes mid-log on restart — persists (inode, offset) to kv
every EOF + on shutdown, and replays the unread tail next time. Any
solve line written while kamado-api was down would previously be
invisible forever.
* Background reconcile loop (60 s) retries hash/reward enrichment for
blocks the original RPC missed, so a transient bitcoind-index race no
longer permanently leaves a block hashless.
* Reorg detection: same loop compares each recent stored hash against
getblockhash(height); a mismatch stamps orphaned_at. UI renders these
strikethrough with a red "orphaned" tag instead of showing illusory
rewards forever.
* InsertBlock now reports whether a row was actually inserted; the
caller WARN-logs duplicate-height ignores so a re-mined orphaned
height can't disappear silently.
* Submit-attempt vs confirmed counters surface failed submissions:
every "Possible/Submitting block solve" log line increments
block_submit_attempts; "Solved and confirmed" increments
block_submits_confirmed. A growing gap means bitcoind is rejecting
our submissions — previously invisible.
* share_err patch refreshed against pinned ckpool source: added
SE_NO_JOBID -> 21 and SE_WORKER_MISMATCH -> 24 mappings, kept
SE_INVALID_NONCE2 in 20 (it's a malformed-input error, not low-diff).
AxeOS users now see actionable Stratum codes instead of
"unknown error".
UI gets new orphaned_at + block_submit_attempts/confirmed fields on
the snapshot type and a strikethrough-with-tag rendering for orphaned
blocks in BlocksTable.
Dashboard now renders 10 tiles in a 5x2 overview: hashrate, best
share, miners, network hashrate, and expected block on the top row;
difficulty, block height, block reward, total work, and the
difficulty-adjustment countdown on the bottom row. Difficulty is
rendered with T/P suffixes instead of scientific notation, the main
hashrate card shows the 1-minute value, and the block-height tile
pulses orange when the network tip advances.
Added a 24-hour hashrate area chart below the overview, sampled
once per minute. Samples are persisted to a new hashrate_samples
SQLite table and restored on startup so the chart doesn't reset
every time kamado-api is restarted.
Cumulative pool work (sum of accepted diff-1-normalized shares) is
now tracked across ckpool restarts. The aggregator integrates only
positive deltas on pool.Shares — a regression means ckpool's
counter reset to zero and the baseline is refreshed without losing
the running total. A hasPoolSharesBaseline flag prevents double-
counting on the first refresh after a kamado-api restart. The
value is persisted to a new kv table once per minute.
Next-block reward (subsidy + fees) is fetched from bitcoind
getblocktemplate at most once per minute and surfaced as a tile.
Header's block-height badge now reads prevHeight via untrack() so
the effect doesn't form a dependency cycle with its own write.
Logmon now captures the share diff from ckpool's "Possible block
solve" line preceding the confirmation and attaches it to the
BlockEvent. Persisted as share_diff alongside height/hash/reward
and rendered as a new column in the dashboard block history.
New internal/store package wraps modernc.org/sqlite (pure Go,
no CGO) with a BlockStore that exposes Open/Close/InsertBlock/
Recent. The aggregator now accepts an optional *store.BlockStore;
on Run() it loads up to maxBlockHistory rows from the store before
the first refresh, and each ingested block gets written to the
DB before being appended to the in-memory ring.
main.go opens the store at cfg.DBPath and logs a warning + falls
back to in-memory-only if the file can't be created — a broken
data volume shouldn't stop the pool from running.
InsertBlock uses INSERT OR IGNORE on the height primary key so
replayed log events after a restart are harmless.
satoshi