Conciseness

Nearly every token is skill-specific policy (ledger mechanics, rulings, completion contract, fix-pass rules) with no explanation of concepts Claude already knows; the 'Common Rationalizations' table and ruling-format repetition are mostly load-bearing. Minor trimming is possible — 'by its absolute path, from the working tree you're executing in' is repeated three times, and the ruling format is spelled out in three places — which keeps it below a 5 but well above the padded level of a 3.

Actionability

Commands are copy-paste ready with exact argument shapes ('scripts/task-start PLAN_FILE N', 'scripts/task-done PLAN_FILE N BASE -- <test command>', 'sdd-workspace PLAN_FILE') and both local scripts exist and match their documented usage. Ledger line formats are given verbatim ('Task <N>: complete (commits <base7>..<head7>, tests: <command> → <result>)'), covering the common cases completely.

Workflow Clarity

The full flow is sequenced twice — prose (Setup → Task Loop with four numbered steps → Final Review → Finish) and a dot graph — with explicit validation checkpoints at every risky point: 'Expected:' line comparison with three defined outcomes, a four-item completion contract, task-done recording only on a passing run, and a TDD fix pass with a green-suite gate. Error-recovery feedback loops (systematic-debugging for code wrong, ruling-and-ledger for plan wrong) are explicit, matching the top anchor.

Progressive Disclosure

Structure is good: the process body belongs inline, and every reference — two local scripts plus cross-skill paths like '../subagent-driven-development/scripts/sdd-workspace' and '../requesting-code-review/code-reviewer.md' — is clearly signaled with its purpose and one level deep. Not a 5 because the ~40-line dot graph and the 16-line rationalizations table are bulky inline content that could live in reference files, and cross-skill paths depend on bundle layout outside this skill.

Specificity

"executing an implementation plan in the current session as the implementer yourself" names the domain plus one concrete action mode (inline, no subagent), matching the anchor for 1-2 concrete actions without comprehensive coverage. Not a 4 because no further capabilities (ledger, TDD, review) are stated; not a 2 because the action described is concrete rather than generic.

Completeness

Both parts are present: the 'what' ("executing an implementation plan in the current session as the implementer yourself") and an explicit 'Use when' clause with two concrete triggers ("your human partner chose inline execution, or no subagent tool is available"). Not a 5 because the 'what' is thin — no mention of what the execution actually involves (ledger, TDD gates, final review) — but well above the weakly-implied 'when' of a 3.

Trigger Term Quality

Relevant phrases like "executing an implementation plan", "inline execution", and "no subagent tool is available" are natural to this domain, but common variations ("run the plan", "implement the plan yourself", "carry out the plan") are missing. This sits at 'some relevant keywords but missing common variations', above the generic one-or-two keyword level.

Distinctiveness Conflict Risk

The qualifiers "as the implementer yourself", "inline execution", and "no subagent tool is available" carve out a clear niche against the closest sibling (subagent-driven execution), but the base phrase "executing an implementation plan" still broadly overlaps that related skill, leaving minor conflict risk. Not a 5 because the differentiation depends on the mode qualifier rather than wholly distinct triggers.