GROUND-TRUTH-RECOVERY: B-0172 calibration delta (65%) — context-dependent pattern refinement

memory/architectural-intent-guesses/2026-05-03-b-0172-skill-domain-plugin-packaging.md

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+# Guess #002 — B-0172 skill-domain-plugin-packaging
+
+## Target
+
+`docs/backlog/P2/B-0172-skill-domain-plugin-packaging-aaron-2026-05-03.md`
+
+The architectural choice: Aaron filed B-0172 for "skill-domain plugin packaging." The question this guess answers: **why packages skills as plugins (specifically) — vs alternatives like cross-skill imports, skill-namespace prefixes, or shared-substrate-via-symlink?**
+
+## Read state at guess time (2026-05-03 ~02:55Z)
+
+Otto has already read:
+
+- B-0172 ROW NAME ONLY (from `ls docs/backlog/P2/`)
+- The skill-design-rules memo (`feedback_skills_as_carved_sentences_knowledge_in_docs_datavault_2_0_pattern_aaron_2026_05_03.md`) — Rule 3: package skill domains as plugins, use harness hooks for pre/post-condition enforcement (contract-based development)
+- The decision-graph memo's composition section: "B-0172 (skill-domain plugin packaging) — plugins are sub-graph bundles; the canonical bundle format documents which nodes + edges to include" and "graph **subgraph packaging** (plugins package skill-domain subgraphs; hooks enforce contract edges between subgraphs)"
+- B-0173 (hook-authoring) ground truth — composes_with [B-0172]; depends_on [B-0170, B-0171]
+- Generic Claude Code knowledge: plugins are deployable packages (e.g., a plugin with skills + commands + agents in `.claude/`)
+- The fact that Aaron uses Claude Code's plugin system (claude-ai/Atlassian, claude-ai/Figma, plugin-microsoft-docs, etc. visible in MCP list)
+
+## Research deliberately AVOIDED
+
+Otto has NOT read:
+
+- B-0172's row body text
+- Any commits referencing B-0172
+- Any `.claude-plugin/plugin.json` example in this repo
+- Any prior conversation about Claude Code plugin packaging architecture
+
+## Otto's in-the-moment guess
+
+### Architectural intent (medium-high confidence)
+
+Aaron's primary architectural intent for plugin-packaging-as-the-mechanism: **skill domains are coherent functional clusters, and Claude Code's plugin system is the natural distribution + isolation + composition unit for them.**
+
+Specifically:
+
+1. **Distribution-as-unit** — a skill-domain (e.g., "git-native-backlog-management" containing decision-archaeology + substrate-claim-checker + future graph tools) is what other harnesses + projects need to consume. Per Aaron's earlier framing about skills-not-just-for-claude (memory mentions sharing skills across harnesses), plugin-packaging is the distribution mechanism
+2. **Isolation-as-namespace** — plugins create namespace isolation (`plugin-name:skill-name`); this prevents skill-naming collisions across plugins from different sources
+3. **Composition-as-contracts** — plugins can declare dependencies on other plugins (e.g., skill-creator plugin → prompt-protector plugin); this is the cross-skill version of B-0173's pre/post-condition hooks
+4. **Versioning-as-lineage** — plugins have versions; this gives skill-domain evolution a concrete artifact (vs the current "edit SKILL.md in place" approach which has no versioning)
+
+The deeper architectural reason — plugin-packaging instantiates the **hub-satellite separation** (skill-design rule 1) at the domain level: each plugin is a hub-satellite cluster (a skill domain hub + its supporting docs / specs / TS tools as satellites); cross-plugin references are graph-edges per DataVault 2.0.
+
+### Substrate-content intent (medium confidence)
+
+The backlog row likely covers:
+
+- Plugin packaging FORMAT (e.g., `.claude-plugin/plugin.json` manifest at top of each packaged skill-domain directory)
+- Plugin location (per the recent "B-0172 plugin location" path-correction in PR #1262: `~/.claude/plugins/cache/<plugin-name>/` is the install location; manifest path is `.claude-plugin/plugin.json` inside the plugin)
+- Migration plan: which existing skill-domains should be packaged as plugins (decision-archaeology + substrate-claim-checker + OpenSpec-tooling forms one cluster)
+- Cross-plugin dependency declaration mechanism (how plugin-A declares it depends on plugin-B's skills)
+- Distribution: how plugins are published/shared (GitHub repo? local-only first?)
+
+### Specific implementation intent (lower confidence)
+
+The implementation will probably:
+
+- Use Claude Code's plugin manifest format (`.claude-plugin/plugin.json` per recent path correction)
+- Plugin format: directory tree with `.claude-plugin/plugin.json` + `skills/` + `commands/` + `agents/` + `hooks/`
+- Plugin discovery: Claude Code reads `~/.claude/plugins/cache/<plugin-name>/` directories at session start
+- Dependencies: `dependencies: ["plugin-name@version"]` in the manifest (analogue of npm's package.json)
+- The B-0172 row scope is probably "package the existing decision-archaeology + substrate-claim-checker into a plugin called something like `git-native-backlog-management`" — concrete first packaging exercise
+
+### Cross-row composition (medium confidence)
+
+B-0172 likely composes_with:
+
+- B-0169 (decision-archaeology skill) — packaged as part of the first plugin
+- B-0170 (substrate-claim-checker tool) — packaged tooling within the plugin
+- B-0171 (OpenSpec catch-up) — plugin specs live in OpenSpec; OpenSpec catch-up is a depends_on (plugins reference specs)
+- B-0173 (hook-authoring) — composes_with already confirmed; plugins ship with their hooks
+
+depends_on guess: probably **B-0171** (OpenSpec specs exist before plugins package them) but maybe NOT B-0169/B-0170/B-0173 directly — those are the contents being packaged, not gating dependencies.
+
+## Confidence levels
+
+| Layer | Confidence | Reasoning |
+|---|---|---|
+| Architectural — "plugins-as-distribution-+-isolation-+-composition-units for skill domains" | **Medium-High** | Composes naturally with skill-design rule 3 (already first-party-confirmed) + Claude Code plugin system is the natural fit + Aaron's multi-harness framing |
+| Substrate-content — "plugin manifest format + first packaging is decision-archaeology + substrate-claim-checker cluster" | **Medium** | Decision-graph memo mentioned plugin format briefly + recent path corrections (#1262) showed `.claude-plugin/plugin.json` is the convention |
+| Specific implementation — "directory tree + dependencies declaration + GitHub-publishable" | **Low** | Standard Claude Code plugin pattern but I haven't confirmed which specific clusters get packaged first or how dependencies declare |
+| Cross-row composition | **Medium** | Confident on B-0169/B-0170/B-0173 composition; less confident on B-0171 as depends_on vs composes_with |
+
+## Pre-recovery prediction (calibration self-test)
+
+Based on guess #001's pattern (principle-strong + specific-weak), I predict:
+
+- **Architectural layer**: PARTIAL-MATCH — likely got the principles (distribution + isolation + composition + versioning) but probably missed at least one Aaron-named-frame (e.g., maybe contract-based-development extends here? or some specific multi-harness framing I haven't seen?)
+- **Substrate-content layer**: MIXED — likely got the manifest format and packaging-existing-tools idea; probably missed specific scope choices Aaron made
+- **Specific implementation layer**: probably MOSTLY-OFF — I'm guessing about packaging-format conventions without having read the actual row
+
+This pre-prediction itself is calibration data: how well does Otto predict its own accuracy BEFORE seeing the answer?
+
+## Ground truth (recovered 2026-05-03 ~03:00Z via direct read of B-0172)
+
+Read source: `docs/backlog/P2/B-0172-skill-domain-plugin-packaging-aaron-2026-05-03.md` (full body) — protocol-permitted only after the guess commit landed (committed under cf1dc7b on the guess branch; merged to main via PR #1282 still wait-ci at recovery-time, but commit timestamp is the binding marker).
+
+### Architectural intent (Aaron's verbatim)
+
+> *"look at packaking skill domains a plugins or other packagin so we can take advantage of hooks in harnesses"*
+
+**Primary frame**: **plugin packaging exists to ship hooks** ("so we can take advantage of hooks in harnesses"). Without hooks, plugin packaging is "bare-skill-grouping" (the row's own characterization). The composition with B-0173 is depends_on (load-bearing), not just composes_with.
+
+**Promotion-trigger gate**: row is P2 not P1 because no skill domain has yet met the promotion-trigger criteria (3+ worked examples per skill candidate + 1+ judgment-disagreement per expert candidate). When a domain matures, this row becomes the implementation work.
+
+### Substrate-content intent
+
+- `.claude-plugin/plugin.json` manifest with **minimal fields** (name + description + author per the upstream Claude Code spec — NOT semver/dependencies/etc.)
+- Bundle contents: `skills/<skill>/SKILL.md` + `agents/<agent>.md` + hooks (per B-0173) + `tools/` (TS files per rule 2) + OpenSpec capability references (per B-0171)
+- **Codex equivalent uses `.codex-plugin/plugin.json` with richer fields** (semver + interface block + URLs + category) — different shape from Claude Code's
+- **Cross-harness portability**: canonical "skill-domain bundle" format (harness-agnostic) + per-harness packaging adapters that emit harness-specific package formats
+
+### Specific implementation intent
+
+- Install location: `~/.claude/plugins/cache/<plugin-name>/` (Claude Code convention)
+- Manifest path inside the bundle: `.claude-plugin/plugin.json` (per recent #1262 path corrections)
+- B-0169 (decision-archaeology) named as "likely first skill packaged once mature" but row scope is generic — packaging happens when promotion-trigger fires, not "package this specific cluster now"
+
+### Cross-row composition
+
+- depends_on: **[B-0171, B-0173]** (NOT just B-0171)
+- composes_with: [B-0169, B-0170]
+
+## Calibration delta
+
+### Architectural layer — PARTIAL-MATCH (6/10)
+
+| What I got | What I missed |
+|---|---|
+| Distribution-as-unit (correct) | **"Hooks-shipping-as-primary-purpose"** — Aaron's verbatim *"so we can take advantage of hooks in harnesses"* names hooks as THE motivating frame, not a benefit |
+| Composition-as-contracts (correct, principle-shaped) | **Promotion-trigger maturity-gate** — row is P2 specifically because the trigger hasn't fired; I didn't anticipate the maturity-gate-before-packaging design at all |
+| Hub-satellite at domain level (correct, principle-shaped) | (no miss here — though wasn't named in row) |
+| Versioning-as-lineage (incorrect — not a stated frame) | The row says "minimal fields" — no semver in the manifest |
+
+**Analysis**: I generalized to "distribution + isolation + composition" — got the principles right but missed Aaron's specific "hooks-shipping" frame. Same pattern as guess #001 (principle-strong, specific-frame-weak).
+
+The **promotion-trigger maturity-gate is a significant miss**: I didn't anticipate that packaging is gated on skill-domain maturity (3+ worked examples per skill + 1+ judgment-disagreement per expert). This is a DESIGN-by-Aaron choice, not derivable from principles.
+
+### Substrate-content layer — MIXED (6/10)
+
+| What I got | What I missed |
+|---|---|
+| `.claude-plugin/plugin.json` path (correct; cited from #1262 path-correction context) | **Codex equivalent format** with richer fields (semver + interface block + URLs + category) — completely missed |
+| Plugin install location `~/.claude/plugins/cache/<plugin-name>/` (correct) | **Cross-harness portability via canonical-bundle-format + per-harness adapters** — significant architectural element; row's design is to ship a harness-agnostic substrate format |
+| Bundle contents (skills/, agents/, hooks/) (correct, kind of — also tools/ and OpenSpec references) | (closeish on contents) |
+| First packaging = decision-archaeology cluster (correct — B-0169 named as "likely first") | (no miss here) |
+
+**Analysis**: I correctly inferred the Claude-Code-side path/format/install-location (recent specific-context from PR #1262 boosted accuracy). But missed the Codex equivalent + cross-harness adapter design entirely. The cross-harness piece is load-bearing for Aaron's "skills are for everyone and even other agent harnesses" framing.
+
+### Specific implementation layer — MOSTLY-MATCH (7/10)
+
+| What I got | What I missed |
+|---|---|
+| Plugin format: directory tree with manifest + skills/ + agents/ + hooks/ (correct) | **Tools/ subdirectory** — I didn't list this explicitly |
+| Plugin install location (correct) | (no miss) |
+| Manifest path (correct via #1262 context) | (no miss) |
+| Dependencies declaration mechanism (incorrect — I guessed `dependencies: ["plugin-name@version"]`; row says "minimal fields") | The row says minimal fields — no dependencies in the Claude Code manifest. (Codex has more.) |
+
+**Analysis**: This layer was substantially stronger than guess #001's specific-implementation layer. The reason: **recent specific-context from PR #1262 path correction** taught me the actual manifest path + install location. When prior specific-context exists, specific-implementation accuracy is much higher.
+
+**This is a useful finding** about when the principle-strong + specific-weak pattern breaks: it breaks when prior specific-context is present.
+
+### Cross-row composition layer — MOSTLY-MATCH (7/10)
+
+| What I got | What I missed |
+|---|---|
+| depends_on B-0171 (correct) | **depends_on B-0173 (NOT composes_with)** — I categorized B-0173 as composes_with; actual is depends_on. Architectural reason: hooks shipping inside the plugin is the primary value |
+| composes_with B-0169 (correct) | (no miss) |
+| composes_with B-0170 (correct) | (no miss) |
+| | (no major miss) |
+
+**Analysis**: Right rows; one categorization error (B-0173 depends_on vs composes_with). The depends_on B-0173 reflects that "without hooks, packaging is bare-skill-grouping" — packaging-without-hooks is meaningless, so hooks must precede plugin packaging.
+
+## Pre-recovery prediction validation
+
+I predicted before research:
+
+| Layer | Predicted | Actual | Match? |
+|---|---|---|---|
+| Architectural | PARTIAL-MATCH | PARTIAL-MATCH (6/10) | ✓ |
+| Substrate-content | MIXED | MIXED (6/10) | ✓ |
+| Specific implementation | MOSTLY-OFF | MOSTLY-MATCH (7/10) | ✗ — over-predicted weakness |
+| Cross-row composition | (no prediction) | MOSTLY-MATCH (7/10) | n/a |
+
+**Pre-prediction accuracy: 2/3 = 67%**. The pattern (principle-strong + specific-weak) held for architectural + substrate-content layers, but specific-implementation was actually stronger than expected because recent specific-context (PR #1262) was present.
+
+**Updated pattern observation**:
+- The principle-strong + specific-weak pattern holds **when no prior specific-context is present**
+- Recent specific-context (e.g., recent PR fixes, recent doc reads, recent commit context) substantially boosts specific-implementation accuracy
+- Pre-recovery self-prediction is reliable for architectural + substrate-content layers but unreliable for specific-implementation (Otto under-predicts its own ability when specific-context exists)
+
+## Summary
+
+**Score (informal):**
+
+| Layer | Score | Pattern |
+|---|---|---|
+| Architectural intent | **6/10** | Principle-strong; missed Aaron's "hooks-shipping" frame + promotion-trigger maturity-gate |
+| Substrate-content | **6/10** | Got Claude-Code-side; missed Codex equivalent + cross-harness adapter design |
+| Specific implementation | **7/10** | **Stronger than expected** — recent specific-context (PR #1262) boosted accuracy |
+| Cross-row composition | **7/10** | Right rows; one mis-categorization (B-0173 depends_on vs composes_with) |
+
+**Overall**: 26/40 = **65%** — significantly higher than guess #001's 48%. The improvement came from specific-implementation + cross-row layers, both boosted by prior context.
+
+**Key new finding**: the principle-strong + specific-weak pattern is **context-dependent** — when specific-context exists, the gap narrows. This refines the original pattern observation.
+
+---
+
+**Guess timestamp:** 2026-05-03 ~02:55Z (committed under 4a3d583 on the guess branch; landed to main via PR #1282)
+**Ground-truth recovery timestamp:** 2026-05-03 ~03:00Z
+**Author:** Otto autonomous (architect hat)
+**Protocol:** in-the-moment guess + ground-truth recovery per
+`memory/feedback_guess_then_verify_architectural_intent_calibration_protocol_aaron_2026_05_03.md`
+**Recovery method:** direct read of `docs/backlog/P2/B-0172-skill-domain-plugin-packaging-aaron-2026-05-03.md` body
+**Series:** Guess #002 in calibration series; #001 scored 48%, #002 scored 65% — improvement attributed to recent specific-context (PR #1262) boosting specific-implementation layer