Fix/zsh count multiline

[Dilyxs]

Problem

when importing zsh_history, if there are multi-line commands, the progress bar displays an incorrect count. This happens because entries() counts physical lines via count_lines and not the commands.

Fix

.entries() now counts joined commands instead of lines.Same complexity, no extra traversal (it already walked the whole file)

Test plan

test_parse_file updated and passing; new test (test_count_lines_multiline does this check more explicitly)

Closes #3008

Checks

• I am happy for maintainers to push small adjustments to this PR, to speed up the review cycle
• I have checked that there are no existing pull requests for the same thing

[github-actions]

Fossier: Manual Review Requested

@dilyxs is a new contributor. A maintainer should review this PR before merging.

Score Breakdown

Total Score: 65.1/100 | Confidence: 100% | Outcome: REVIEW

Signal	Value	Score	Weight
account_age	1514	1.00	0.09
public_repos	22	1.00	0.05
contribution_history	22	0.11	0.05
follower_ratio	0.8	0.40	0.05
bot_signals	False	0.50	0.04
open_prs_elsewhere	3	0.62	0.09
closed_prs_elsewhere	0	1.00	0.10
merged_prs_elsewhere	1	0.36	0.08
prior_interaction	1	0.33	0.08
activity_velocity	1	1.00	0.08
pr_content	...	1.00	0.08
commit_email	no_email	0.50	0.04
pr_description	...	0.70	0.05
repo_stars	30087	0.30	0.04
org_membership	0	0.20	0.03
commit_verification	...	1.00	0.04
contributor_stars	0	0.00	0.04

[greptile-apps]

Greptile Summary

This PR updates zsh history import counting for multiline commands. The main changes are:

• Counts zsh entries after applying the same line-joining rule used during import.
• Skips invalid unmetafied lines while counting, matching the load path.
• Updates zsh importer tests for multiline command counts.

Confidence Score: 5/5

This looks safe to merge.

• No blocking issues found in the changed code.

Important Files Changed

Filename	Overview
crates/atuin-client/src/import/zsh.rs	Updates Zsh::entries() so progress counts align with commands pushed by load() for continued lines.

_{Reviews (1): Last reviewed commit: "fix: fixed indentation for zsh" | Re-trigger Greptile}