fix(cli): keep the wallet-balance readout fresh with a periodic refresh

[JPShag]

What

The DeepSeek wallet-balance (BAL) readout in the CLI status line only refreshed at startup, at turn end, and after a model switch. A missed turn_done — the event-loss the desktop already guards against — or a long delivery-mode turn with no turn boundary froze the readout at the startup value for the rest of the session.

This adds a periodic refresh: the TUI re-queries the provider balance every 60s and re-arms the timer, independent of event delivery, so BAL stays roughly current even when no turn ends.

Changes

• internal/cli/chat_tui.go: balanceTickMsg + balanceRefreshTick periodic timer armed at Init; the tick fetches a fresh balance and re-arms; balanceRefreshCmds keeps the fetch/re-arm work testable.
• internal/cli/statusline_test.go: coverage that a balance tick fetches a fresh balance and re-arms, that Update wires the tick, and that Init arms the timer.
• tools/repolint/baseline.json: bumped only chat_tui.go (complexity 301→302, file-size 4558→4589, function-size 1203→1206); the file sits at its ratchet ceiling.

Verification

• go test ./internal/cli/ -run TestBalance -count=1 passes
• go test ./internal/cli/ -count=1 (no new failures; pre-existing TestModelSwitchRefreshesCustomStatusline also fails on a clean checkout)
• go test ./internal/tool/builtin/ ./internal/boot/ -count=1 passes
• go vet ./internal/cli/ and go build ./... clean
• go run ./tools/repolint clean

Documentation-impact: none - user-visible change confined to the CLI status-line refresh cadence; no docs describe when the BAL readout updates, and its meaning is unchanged.

[Copilot]

Pull request overview

Adds a periodic wallet-balance refresh to the CLI TUI so the BAL status-line readout stays up to date even if turn_done is missed or a long delivery-mode turn has no boundary.

Changes:

• Introduces a 60s periodic balanceTickMsg (tea.Tick) and wiring in Init/Update to fetch balance and re-arm the timer.
• Factors the tick’s work into balanceRefreshCmds() to make the behavior testable without waiting for real time.
• Adds unit tests covering the tick fetch, Update wiring, and Init scheduling; updates repolint baseline ratchet values.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
internal/cli/chat_tui.go	Adds periodic balance tick message, scheduling, and helper commands for refresh + re-arm.
internal/cli/statusline_test.go	Adds tests ensuring periodic refresh fetches a fresh balance and is scheduled by Update/Init.
tools/repolint/baseline.json	Updates repolint baseline numbers to account for the small size/complexity increase.

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[JPShag]

Unnamed parameters are valid in Go function literals when unused (ParameterDecl allows omitting the name). This matches go build / go test locally. elapsedTick uses _ by convention only both forms compile. Resolving as incorrect.