feat(taiko-client): add more preconfirmation metrics

[davidtaikocha]

No description provided.

[Copilot]

Pull Request Overview

This PR adds more preconfirmation metrics to enhance observability of driver events in the Taiko client. Key changes include the addition of several new gauges and counters in the metrics package, updates to API calls to record events, and consistent renaming of existing metrics to remove outdated "P2P" prefixes.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
packages/taiko-client/internal/metrics/metrics.go	Adds several new metric definitions and renames some existing metrics to improve naming consistency.
packages/taiko-client/driver/preconf_blocks/server.go	Updates calls to use the new metric names and registers new events.
packages/taiko-client/driver/preconf_blocks/queue.go	Adds a metric call for caching envelope events.
packages/taiko-client/driver/preconf_blocks/api.go	Records a new metric when building preconfirmation blocks from RPC data.

Comments suppressed due to low confidence (1)

packages/taiko-client/driver/preconf_blocks/api.go:236

• [nitpick] Verify that using a Gauge for counting blocks from RPC is intentional; if the value only ever increases, a Counter might be more semantically appropriate.

metrics.DriverL2PreconfBlocksFromRPCGauge.Inc()

[codecov]

Codecov Report

Attention: Patch coverage is 4.76190% with 20 lines in your changes missing coverage. Please review.

Project coverage is 26.55%. Comparing base (e7b8f05) to head (9cd6243).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...kages/taiko-client/driver/preconf_blocks/server.go	0.00%	18 Missing ⚠️
packages/taiko-client/driver/preconf_blocks/api.go	0.00%	2 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
...ckages/taiko-client/driver/preconf_blocks/queue.go	81.48% <100.00%> (+0.23%)	⬆️
packages/taiko-client/internal/metrics/metrics.go	0.00% <ø> (ø)
packages/taiko-client/driver/preconf_blocks/api.go	0.00% <0.00%> (ø)
...kages/taiko-client/driver/preconf_blocks/server.go	9.98% <0.00%> (-0.16%)	⬇️

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