# pm-state: the sidecar store

Machine-derived and PM-authored state that has no home in the work repo. Split
across two tiers per [decisions.md](./decisions.md) D4:

- **`pm-state` gitea repo** — durable, versioned truth. Committed files below.
- **local SQLite** — rebuildable cache/index. Never the source of truth.

## `pm-state` repo layout

```
charter.md                 durable   project charter + hot-memory seed (human + agent authored)
directives/log.jsonl       durable   append-only directive ledger (conflict-free merge)
capacity/members.yaml      durable   per-person capacity model (human-set)
calibration/model.json     cached    fitted calibration; regenerable from actuals, committed for
                                     reproducibility + offline forecasting
```

`forecasts/`, `focus/`, and inferred lifecycle timestamps are **not** committed
— they are SQLite-only and recomputed on rebuild (regenerable from the work repo
+ calibration model).

## Directive log — `directives/log.jsonl`

Append-only, one JSON object per line. **Merge is concatenation**: order is
derived from `ts` at read time, so two clients appending never produce a git
conflict. `id` is the durable key; `seq` is a display ordinal computed on read,
never stored (avoids the "who owns the next number" contention). v1 is
single-writer (one PM); this format is already safe for the deferred
multi-writer case.

```jsonc
{
  "id": "d_01J8...",              // crypto.randomUUID at write; durable identity
  "ts": "2026-07-08T14:03:00Z",   // ISO 8601 UTC; sole ordering key
  "actor": "christian",           // gitea username of the directive-giver
  "kind": "reprioritize",         // reprioritize | reestimate | set-deadline | scope | capacity | note
  "target": { "issue": 87 },      // { issue } | { milestone } | { member } | null (project-wide)
  "quote": "bump the auth bug above everything",   // verbatim, shown in the ledger
  "params": { "priority": 1 },    // structured effect the scheduler applies
  "rationale": "pilot customer blocked",           // why (optional but nagged for)
  "status": "accepted"            // proposed | accepted | amended | withdrawn
}
```

Lifecycle: a directive is recorded as `proposed`, the scheduler re-runs, the
agent presents the consequence diff, and the PM's response flips it to
`accepted` / `amended` / `withdrawn`. All four states stay in the ledger
(append a status-change line; never mutate a prior line).

## Capacity — `capacity/members.yaml`

Estimate unit is **ideal person-days**. Capacity is expressed in ideal
person-days available per calendar day.

```yaml
members:
  - gitea: christian
    focusFactor: 0.8         # productive fraction of a working day (0..1)
    projectAllocation: 0.6   # share of focused time on THIS project (0..1)
    workdays: [mon, tue, wed, thu, fri]
    daysOff: []              # ISO dates, e.g. ["2026-07-14"]; PTO calendars deferred
    # other standing slices (compliance 0.2, pilots 0.2) are documentation only —
    # only projectAllocation feeds the scheduler.
```

Derived: `capacityPerWorkday = focusFactor * projectAllocation` (ideal
person-days per working day). The scheduler spreads this across `workdays`,
zeroing `daysOff`. Missing member ⇒ excluded from capacity, flagged by the agent.

## Calibration — `calibration/model.json`

Fitted from closed-issue actuals (estimate label vs inferred elapsed working
time). Lognormal on `log(actual / estimate)`.

```jsonc
{
  "version": 1,
  "fittedAt": "2026-07-08T00:00:00Z",
  "n": 42,                        // closed issues with an estimate feeding the fit
  "coldStart": false,             // true while n < 20 → scheduler uses code priors instead
  "global": { "mu": 0.166, "sigma": 0.45 },   // lognormal params on log-ratio; median ratio = e^mu ≈ 1.18
  "byBucket": {                   // per estimate label; falls back to global when its n is thin
    "1d": { "mu": 0.30, "sigma": 0.55, "n": 12 },
    "2d": { "mu": 0.18, "sigma": 0.40, "n": 9 }
    // 3d / 5d / 8d ...
  },
  "byLabel":  { "backend": { "biasMu": 0.12, "n": 7 } },   // additive to mu; applied when n ≥ floor
  "byPerson": { "christian": { "biasMu": -0.05, "n": 20 } }
}
```

Cold-start (`coldStart: true`, or a bucket with `n` below floor): the scheduler
ignores the file's fitted params for that axis and samples the **code-resident
lognormal priors** in `@commitea/core` (per D3). The file still records whatever
partial `n` exists so the UI's calibration teaser can show progress toward 20.

## SQLite cache (rebuildable — not committed)

Mirror + derived tables, rebuilt from both gitea repos on reconcile:

- `issues`, `labels`, `milestones`, `comments`, `issue_events` — verbatim work-repo mirror
- `lifecycle` — inferred per-issue timestamps (see below), keyed by issue
- `forecasts` — last Monte Carlo run per milestone/issue (regenerable)
- `focus` — current Now/Next/Later snapshot (regenerable)
- `directives` — indexed view of `log.jsonl` for fast querying

## Lifecycle inference

Timestamps derived from the gitea issue timeline; no manual time tracking. Maps
onto the board's five columns:

| Board column | Enter when                                             | Source event            |
|--------------|--------------------------------------------------------|-------------------------|
| Diagnosis    | issue opened                                           | `opened`                |
| Triage       | first label or milestone applied                       | `label` / `milestone`   |
| Steeping     | first branch or commit references the issue            | `commit_ref` / branch   |
| In review    | a PR referencing the issue is opened                   | PR `opened`             |
| Done         | issue closed (PR merged is the deploy signal within)   | `closed` / PR `merged`  |

Elapsed **working** time between Steeping→Done (minus non-workdays/daysOff) is
the "actual" that feeds calibration. Re-openings append new segments; the fit
uses summed working time.
