chore: simplify, modernize (Go 1.26), update deps

[rustatian]

Applied fixes

R — Bug fixes (2)

• memorykv/driver.go — MExpire: add ttm <= 0 guard mirroring Set; prevents time.NewTicker(0) and ta.Reset(0) panics when a past/expired TTL is supplied

M — Modern Go (4)

• memorykv/driver.go — replace == nil variadic guards with len(keys/items) == 0 in Has, MGet, Set, TTL, Delete
• memorykv/driver.go — range-over-value (for _, k := range keys / for _, it := range items) in all loops
• memoryjobs/driver.go — goroutines.Add(^uint64(0)) already modern; no change needed
• memoryjobs/item.go — move encoding/json into the stdlib import group

S — Simplify (3)

• memoryjobs/driver.go — use sync.NewCond(&sync.Mutex{}) constructor in FromConfig and FromPipeline
• memoryjobs/driver.go — reuse captured start/t variable in log calls instead of re-calling time.Now().UTC()
• memorykv/driver.go — remove redundant blocking stopCh send in Delete; LoadAndDelete already signals the callback via a non-blocking select

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: aada2089-ed91-4769-91db-395b5c032a28

📥 Commits

Reviewing files that changed from the base of the PR and between 5b0e272 and d276760.

⛔ Files ignored due to path filters (1)

• go.work.sum is excluded by !**/*.sum

📒 Files selected for processing (3)

• memoryjobs/driver.go
• memoryjobs/item.go
• memorykv/driver.go

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/cleanup-modernize-deps

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[Copilot]

Pull request overview

This PR modernizes and simplifies the in-memory KV and jobs drivers, while addressing a TTL edge case that can panic when an already-expired TTL is supplied.

Changes:

• Update KV driver variadic argument guards (len(...) == 0) and simplify loops (for _, v := range ...).
• Add an expired/invalid TTL guard in MExpire to avoid time.NewTicker(0) / Reset(0) panics.
• Simplify jobs driver initialization/logging (sync.NewCond(...), reuse captured start timestamps) and reorder stdlib imports.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
memorykv/driver.go	Refactors variadic guards/loops, adjusts TTL handling (including MExpire) and simplifies delete logic.
memoryjobs/driver.go	Uses sync.NewCond constructor and reuses captured start times in lifecycle logs.
memoryjobs/item.go	Moves encoding/json into the stdlib import group.

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