my-pi/pi-permission-system/docs/retro/0559-complete-authority-migration.md

issue, issue_title

issue	issue_title
559	pi-permission-system: complete the authority/ directory migration

Retro: #559 — pi-permission-system: complete the authority/ directory migration

Stage: Planning (2026-07-09T00:00:00Z)

Session summary

Planned Phase 9 Step 5: relocating the five remaining escalation/forwarding/subagent modules (permission-dialog.ts, subagent-registry.ts, subagent-lifecycle-events.ts, permission-forwarding.ts, forwarding-manager.ts) from the flat src/ root into src/authority/, mirroring their test files into test/authority/. This is a behavior-preserving mechanical move — the operator's own issue, unambiguous — so the ask_user gate was skipped. Plan committed at packages/pi-permission-system/docs/plans/0559-complete-authority-migration.md; recommends a single atomic refactor: commit (ship independently, hidden changelog type).

Observations

• The root eslint.config.js local-rules/no-parent-relative-imports rule flags only ../ imports and auto-fixes them to #src//#test/ aliases; same-directory ./sibling imports are permitted, which is why the moved modules and index.ts use ./. So eslint --fix + tsc mechanically enforce most of the import rewrites — the plan leans on the green suite as the full correctness proof.
• Import-rewrite rules split into six categories (Design Overview): the subtlety is that #src/ aliases are package-root-absolute, so an importer's specifier changes because the target moved, not because the importer moved; whereas same-dir ./ refs among the five co-moving modules stay put.
• Decided to move the five test files into test/authority/ to match the established src/authority/foo.ts ↔ test/authority/foo.test.ts convention from Steps 1–4 — the issue only names src modules, but the mirror is the standing pattern.
• Explicitly excluded docs/architecture/v3-architecture.md: it is a frozen pre-authority/ snapshot (last touched at #314, no authority/ subtree at all), so patching two stale tree lines would leave it internally inconsistent. Left as a historical artifact.
• Current-state doc grep surfaced three files to update alongside the move: architecture.md (tree + Step 5 ✅ + Mermaid node), subagent-integration.md (2 prose paths), and the package-pi-permission-system SKILL (2 prose paths). Remaining hits are frozen plans/retros/history.
• Folded the doc updates into the refactor: commit rather than a separate docs: commit — a docs: commit touching docs/architecture/ is an unhidden changelog type here and would cut an unwanted release; the package skill also wants the roadmap step-complete marker in the implementation commit.
• No follow-up issues filed — scope is fully mechanical with no deferred work.

Stage: Implementation — Build (2026-07-09T00:00:00Z)

Session summary

Executed the single-step plan in one atomic commit (c6c84ca7): git mvd the five modules (permission-dialog.ts, subagent-registry.ts, subagent-lifecycle-events.ts, permission-forwarding.ts, forwarding-manager.ts) and their five test files into src/authority/ / test/authority/, rewrote every import per the plan's six categorized rules, and folded in the architecture-doc, subagent-integration.md, and SKILL.md updates. tsc, eslint, the full suite (2310 tests), and pnpm fallow dead-code all passed after the move; pre-completion review returned PASS.

Observations

• The plan's Design Overview correctly predicted all internal import rewrites for the five moved files (categories 1–3), but its Module-Level Changes importer enumeration (category 4/5) missed three root-level files with same-directory ./ imports of the moved modules: src/permission-gate.ts (./permission-dialog), src/session-approval.ts (./permission-forwarding), and src/permission-session.ts (./forwarding-manager). tsc caught all three immediately (Cannot find module) since they weren't in the #src/permission-dialog-style grep the plan ran — a same-dir ./ import to a module that later moves out of the directory has no #src/ marker to grep for. Fixed inline as part of the same commit; not a plan deviation requiring a stop, since tsc made the gap immediately visible and mechanical to close.
• Deliberately left the Phase 9 phase-level archival (History table row, new docs/architecture/history/phase-9-*.md file, condensed phase summary paragraph matching the Phase 1–8 convention) out of scope, even though all five Phase 9 steps are now ✅. The plan's Non-Goals explicitly excluded docs/architecture/history/*, and that archival is a substantially larger, separate task (a new summary doc) that wasn't reviewed at planning time. Marked only the Step 5 heading, Landed: line, and Mermaid node per the plan's explicit scope.
• Reviewer verdict: PASS — no warnings. Confirmed pure move (import-specifier-only diffs), correct tree-connector glyphs, both invariant-pinning tests (Step 3 forwarded-broadcast, Step 4 grant-scope) still exercised.
• No steps remain; ready for /ship-issue.

Stage: Final Retrospective (2026-07-09T20:42:26Z)

Session summary

Phase 9 Step 5 shipped end-to-end in one session (plan → build → ship): relocated the five remaining escalation/forwarding/subagent modules into src/authority/, mirrored their tests into test/authority/, and closed out Phase 9 (all five steps now ✅). One atomic refactor: commit (c6c84ca7), 2310 tests green, fallow clean, pre-completion reviewer PASS, CI green, issue closed — no release cut (hidden changelog type auto-batches).

Observations

What went well

• Tight verification cadence caught the one enumeration gap at zero cost: tsc ran immediately after the bulk import rewrite and flagged the three missed root-level importers (permission-gate.ts, session-approval.ts, permission-session.ts) before any commit, so the fix folded into the same atomic commit with no rework or follow-up.
• Clean mechanical execution on a 40-file move: git mv preserved rename detection (R097–R100 similarity), biome check --write auto-sorted the reordered imports, and the whole change verified green in one pass.
• Scope discipline at two decision points — declined the Phase 9 phase-level archival (History table + history/phase-9-*.md) as out-of-plan-scope, and folded doc updates into the refactor: commit rather than a stray docs: commit that would have cut an unwanted release.

What caused friction (agent side)

• missing-context (planning) — the plan's importer enumeration grepped only #src/<module> alias imports and missed three root-level files that imported the moving modules via same-directory ./ specifiers. A same-dir ./<module> import to a module that leaves the directory has no #src/ marker to match, so the planning grep structurally could not see them. Self-identified via tsc at build time. Impact: three extra one-line edits inside the same commit; no rework, no follow-up commit — added friction but effectively zero cost because tsc is a perfect net for this class.
• other (tooling) — the bulk sed import rewrite took three attempts: first a #-delimiter clash with the #src/ literal, then a zsh word-splitting trap where an unquoted multiline $files list became one "File name too long" argument. Resolved with | while IFS= read -r f. Impact: two wasted tool calls; no effect on the committed result.

What caused friction (user side)

• None — the operator ran the three stages via slash commands with no mid-session correction; the work was mechanical and unambiguous, so mechanical oversight was appropriate.

Diagnostic details

• Model-performance correlation — the sole subagent dispatch (pre-completion-reviewer) ran on anthropic/claude-sonnet-5; appropriate for the judgment-heavy review checklist. No mismatch.
• Escalation-delay tracking — the sed tooling friction was three consecutive attempts on the same operation, under the five-call threshold; no subagent escalation warranted.
• Feedback-loop gap analysis — verification was incremental, not end-loaded: tsc after the import rewrites (caught the gap), lint + biome --write after, full test + fallow before the commit. No gap.

Changes made

1. .pi/prompts/plan-issue.md — added a Module-Level Changes line: when a plan step moves a module to a different directory, grep same-directory ./<module> importers too, not only #src/<module> alias imports (an alias-only grep structurally misses same-dir ./ callers of a module leaving the directory). Refs #559.