[AnnatarHe]

Summary

I audited every CLI → server payload for timezone handling. They all already send absolute instants, so the data lands in UTC wherever the CLI is installed:

Payload	Field and format
track	startTime/endTime (+ nano), Unix
heartbeats	time, Unix seconds
OTEL events and metrics	timestamp/timestampMs, from TimeUnixNano
OTEL spans	*UnixNano
backfill events	Unix seconds, parsed from the agents' RFC 3339 Z timestamps
backfill complete	from/to, RFC 3339 with offset (same instant)
codex-usage	resets_at, .UTC() RFC 3339
anthropic-usage	resets_at, Anthropic's own RFC 3339
statusline / cc info queries	send local midnight converted to UTC

The one CLI-side mismatch: shelltime grep --since/--until turned the dates into UTC days. --since 2026-10-23 in Tokyo started at 09:00 local time. They are now calendar days of the machine's timezone, matching aicode backfill --since/--until and the statusline's "today". The server still only receives Unix seconds. The flag help says "in local time".

Related server work, which makes the server bucket days and hours in the client's zone: shelltime/server#561. Web side: shelltime/web#725.

Test plan

• go test ./commands/ -run 'Grep|ParseFlexibleDate|Filter' passes with TZ unset, America/Los_Angeles and Asia/Kolkata.
• New TestParseFlexibleDate_UsesMachineTimezone pins JST midnight and end of month.
• The full ./commands run fails in TestTrackTestSuite both on main and on this branch: this cloud session has a real daemon on /tmp/shelltime.sock. That failure is unrelated to this change.

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Generated by Claude Code

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[chatgpt-codex-connector]

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📝 Code Review	⚠️ Failed 2026-10-23T05:24:10.305071Z We couldn’t complete this review. Comment @codex review to try again.	760308d	PR opened

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[github-actions]

⏱️ shelltime track performance

✅ No significant change in shelltime track latency

Comparing main @ babae9d → #334 @ 760308d. Each scenario execs the binary the way the shell hooks do; values are the median of 10 interleaved rounds. Lower is better.

Scenario	base	head	Δ	p
Startup/floor	176 µs ±20%	173 µs ±8%	~	0.684	A/A
Startup/version	2.19 ms ±11%	2.03 ms ±9%	-7.31%	0.023	✅
Track/daemon/pre	2.15 ms ±10%	2.28 ms ±9%	~	0.529	✅
Track/daemon/post	2.30 ms ±9%	2.28 ms ±10%	~	0.684	✅
Track/direct/pre	2.29 ms ±10%	2.26 ms ±7%	~	0.579	✅
Track/direct/post	4.42 ms ±7%	4.58 ms ±8%	~	0.353	✅
Track/direct/post-sync	5.59 ms ±5%	5.47 ms ±12%	~	0.739	✅

Binary size: 19.2 MiB → 19.2 MiB (+0.0%).

CPU, tail latency and memory

Per exec, base → head (Δ when significant).

Scenario	p95 wall	user CPU	sys CPU	peak RSS
Startup/floor	226 µs → 224 µs	152 µs → 147 µs	5 µs → 5 µs	9.2 MiB → 9.2 MiB
Startup/version	2.74 ms → 2.70 ms	1.60 ms → 1.53 ms	613 µs → 540 µs	15.5 MiB → 15.5 MiB
Track/daemon/pre	2.76 ms → 2.81 ms	1.56 ms → 1.65 ms	649 µs → 663 µs	16.5 MiB → 16.5 MiB
Track/daemon/post	2.87 ms → 2.81 ms	1.62 ms → 1.65 ms	645 µs → 627 µs	16.4 MiB → 16.4 MiB
Track/direct/pre	2.87 ms → 2.91 ms	1.67 ms → 1.59 ms	674 µs → 711 µs	16.4 MiB → 16.4 MiB
Track/direct/post	5.70 ms → 6.12 ms	3.10 ms → 3.07 ms	1.59 ms → 1.54 ms	17.6 MiB → 17.6 MiB
Track/direct/post-sync	6.83 ms → 6.94 ms	4.20 ms → 4.09 ms	1.81 ms → 1.91 ms	19.5 MiB → 19.5 MiB

benchstat

goos: linux
goarch: amd64
pkg: github.com/malamtime/cli/perf
cpu: AMD EPYC
                         │     base     │                head                 │
                         │    sec/op    │    sec/op     vs base               │
Startup/floor-2            176.4µ ± 20%   173.4µ ±  8%       ~ (p=0.684 n=10)
Startup/version-2          2.190m ± 11%   2.030m ±  9%  -7.31% (p=0.023 n=10)
Track/daemon/pre-2         2.151m ± 10%   2.282m ±  9%       ~ (p=0.529 n=10)
Track/daemon/post-2        2.301m ±  9%   2.283m ± 10%       ~ (p=0.684 n=10)
Track/direct/pre-2         2.292m ± 10%   2.265m ±  7%       ~ (p=0.579 n=10)
Track/direct/post-2        4.424m ±  7%   4.579m ±  8%       ~ (p=0.353 n=10)
Track/direct/post-sync-2   5.587m ±  5%   5.467m ± 12%       ~ (p=0.739 n=10)
geomean                    1.953m         1.941m        -0.58%

                         │     base     │                head                 │
                         │  p50-sec/op  │  p50-sec/op   vs base               │
Startup/floor-2            165.7µ ± 10%   161.2µ ±  8%       ~ (p=0.529 n=10)
Startup/version-2          2.113m ± 13%   1.892m ± 11%       ~ (p=0.063 n=10)
Track/daemon/pre-2         2.033m ± 17%   2.130m ± 11%       ~ (p=0.739 n=10)
Track/daemon/post-2        2.165m ± 12%   2.223m ± 10%       ~ (p=0.579 n=10)
Track/direct/pre-2         2.208m ± 11%   2.163m ±  9%       ~ (p=0.529 n=10)
Track/direct/post-2        4.253m ±  4%   4.314m ±  7%       ~ (p=0.739 n=10)
Track/direct/post-sync-2   5.467m ±  6%   5.357m ±  9%       ~ (p=0.853 n=10)
geomean                    1.867m         1.843m        -1.30%

                         │     base     │                head                 │
                         │  p95-sec/op  │  p95-sec/op   vs base               │
Startup/floor-2            226.3µ ± 19%   223.8µ ± 21%       ~ (p=0.739 n=10)
Startup/version-2          2.740m ± 21%   2.699m ± 14%       ~ (p=0.190 n=10)
Track/daemon/pre-2         2.756m ± 13%   2.809m ± 11%       ~ (p=0.684 n=10)
Track/daemon/post-2        2.867m ± 10%   2.809m ± 12%       ~ (p=0.853 n=10)
Track/direct/pre-2         2.866m ± 16%   2.909m ±  9%       ~ (p=0.971 n=10)
Track/direct/post-2        5.698m ±  9%   6.116m ± 12%       ~ (p=0.353 n=10)
Track/direct/post-sync-2   6.835m ± 14%   6.942m ± 18%       ~ (p=0.912 n=10)
geomean                    2.461m         2.487m        +1.06%

                         │     base     │                head                 │
                         │  peak-rss-B  │  peak-rss-B   vs base               │
Startup/floor-2            9.150Mi ± 2%   9.178Mi ± 1%       ~ (p=0.811 n=10)
Startup/version-2          15.52Mi ± 0%   15.51Mi ± 0%       ~ (p=0.490 n=10)
Track/daemon/pre-2         16.51Mi ± 0%   16.52Mi ± 0%       ~ (p=0.205 n=10)
Track/daemon/post-2        16.40Mi ± 0%   16.40Mi ± 0%       ~ (p=0.781 n=10)
Track/direct/pre-2         16.38Mi ± 0%   16.38Mi ± 0%       ~ (p=0.538 n=10)
Track/direct/post-2        17.57Mi ± 0%   17.57Mi ± 0%       ~ (p=0.541 n=10)
Track/direct/post-sync-2   19.52Mi ± 0%   19.49Mi ± 0%       ~ (p=0.435 n=10)
geomean                    15.51Mi        15.51Mi       +0.03%

                         │     base     │                head                 │
                         │  sys-sec/op  │  sys-sec/op   vs base               │
Startup/floor-2            5.350µ ± 49%   5.415µ ± 37%       ~ (p=0.739 n=10)
Startup/version-2          612.6µ ± 19%   540.5µ ± 28%       ~ (p=0.165 n=10)
Track/daemon/pre-2         649.0µ ± 16%   662.9µ ± 29%       ~ (p=0.739 n=10)
Track/daemon/post-2        644.7µ ± 22%   627.1µ ± 31%       ~ (p=0.912 n=10)
Track/direct/pre-2         673.6µ ± 34%   711.4µ ± 38%       ~ (p=0.739 n=10)
Track/direct/post-2        1.585m ± 20%   1.544m ± 16%       ~ (p=0.853 n=10)
Track/direct/post-sync-2   1.812m ± 18%   1.908m ± 18%       ~ (p=0.481 n=10)
geomean                    428.5µ         426.1µ        -0.56%

                         │     base     │                head                 │
                         │ user-sec/op  │ user-sec/op   vs base               │
Startup/floor-2            151.6µ ± 14%   147.3µ ± 10%       ~ (p=0.529 n=10)
Startup/version-2          1.600m ±  9%   1.534m ±  4%       ~ (p=0.075 n=10)
Track/daemon/pre-2         1.562m ±  8%   1.648m ± 10%       ~ (p=0.315 n=10)
Track/daemon/post-2        1.616m ±  9%   1.651m ±  6%       ~ (p=0.436 n=10)
Track/direct/pre-2         1.671m ±  2%   1.592m ±  7%       ~ (p=0.123 n=10)
Track/direct/post-2        3.102m ±  5%   3.068m ± 14%       ~ (p=0.853 n=10)
Track/direct/post-sync-2   4.201m ±  7%   4.090m ± 14%       ~ (p=0.481 n=10)
geomean                    1.448m         1.431m        -1.16%

_{Δ compares medians; ~ means no significant difference (Mann-Whitney U, p ≥ 0.05). A scenario is flagged when it is more than 10% and more than 250µs slower with p < 0.05. Startup/floor runs true, not shelltime: it is an A/A check of runner noise. Runner: linux/amd64, AMD EPYC. go1.27.1, 10 rounds × 100 execs per scenario and binary.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Flag	Coverage Δ
unittests	86.36% <100.00%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
commands/grep.go	97.91% <100.00%> (ø)

... and 2 files with indirect coverage changes

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[shelltime]

☁️ Claude Code cloud · Normalize CLI data to UTC and fix viewer timezone handling

Audited CLI-originated timestamps and updated server/web timezone handling so stored data remains UTC while reports and views use the viewer’s local timezone.

💰 Cost	🔢 Tokens	⏱️ Duration	🧠 Models	💬 Prompts	✏️ Lines
$33.73	114.3M	56m (40m active)	claude-opus-5-5, claude-haiku-5-5	1	+415 / −0

_{114.3M tokens: 2.5K input · 238.5K output · 113.1M cache read · 956.3K cache write}

📝 AI summary

Reviewed the CLI-to-server data path and timezone-sensitive reporting behavior to enforce the rule that CLI data is normalized to UTC regardless of where the CLI is installed. Updated /home/user/server/schema/activity.timezone.go to correct timezone-aware activity bucketing, and added coverage in /home/user/server/schema/timezone_buckets_test.go and /home/user/server/tasks/report_local_hour_test.go for local-hour reports and timezone bucket behavior.

Updated /home/user/web/src/service/viewer-timezone.server.ts so the web application supplies the viewer’s timezone when requesting or presenting data, allowing UTC-backed records to be interpreted correctly for each user. The session used repository searches, targeted file inspection, edits, shell commands, and delegated analysis to audit related paths; no iOS files required changes in this pass.

View this session on ShellTime →

_{Updated 2026-10-24 05:25 UTC by ShellTime · totals for the whole session so far · the session page is visible to its owner}