Stax Digital Garden

LOG-1006 - Time-Blocking Grids: Reconciling Planned vs. Realized Epochs

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Living Document Notice
Published 2026-09-17. The evolving architecture, revisions, and connected notes for this dispatch live in the Stax Digital Garden.

Time-Blocking Grids: Reconciling Planned vs. Realized Epochs

Time-Blocking Grids: Reconciling Planned vs. Realized Epochs: Dual-trace Phosphor P7 monochromatic ice blue and P4 paper white vector CRT macro showing dual-track time-blocking grids, planned versus realized comparative timeline bands, and slippage deviation waveforms

Time-blocking plans constructed at the start of a morning rarely survive operational contact with reality. Production outages, unplanned discussions, and underestimated debugging sessions disrupt rigid schedules. The Bosun Logbook introduces a reconciliation pipeline that projects planned calendar blocks alongside realized execution telemetry.

Dual-Track Temporal Representation

Daily notes track planned versus actual epochs within a compact YAML frontmatter structure:

time_blocks:
  planned:
    - [09:00, 11:00, "Storage Engine Refactor"]
    - [11:30, 12:30, "System Architecture Sync"]
    - [13:30, 16:00, "CST Tokenizer Benchmarking"]
  realized:
    - [09:15, 11:45, "Storage Engine Refactor"]
    - [11:45, 12:45, "System Architecture Sync"]
    - [14:00, 15:30, "Incident Response: PagerAlert"]
    - [15:30, 17:00, "CST Tokenizer Benchmarking"]

The markdown body captures the raw narrative, while the telemetry extractor parses interval headers to populate the realized array automatically.

Drift Quantification Algorithm

A local Rust utility compares planned against realized intervals to measure execution drift:

pub struct DriftMetrics {
    pub planned_duration_mins: i64,
    pub realized_duration_mins: i64,
    pub slippage_mins: i64,
}
 
pub fn compute_drift(planned: &[(i64, i64)], realized: &[(i64, i64)]) -> DriftMetrics {
    let plan_total: i64 = planned.iter().map(|(s, e)| e - s).sum();
    let real_total: i64 = realized.iter().map(|(s, e)| e - s).sum();
    DriftMetrics {
        planned_duration_mins: plan_total,
        realized_duration_mins: real_total,
        slippage_mins: real_total - plan_total,
    }
}

By computing drift deterministically across months of logs, operators identify systematic estimation errors without resorting to intrusive cloud tracking telemetry.

  • Directus Target: logbook
  • Garden Source Reference: MOC - Daily Log & Chronological Journal, MOC - Bosun PKM Tools
  • Garden Source Reference: LOG-1006 - Time-Blocking Grids - Reconciling Planned vs. Realized Epochs

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