docs(kyberforge): fix remaining PR #91 review findings, add apm install routing

Re-review (comment 24) of fix commit e16c3dc found six new issues, mostly
introduced by that fix commit itself: a dangling reference to a Hard Rule
bullet the same commit deleted (apm-orchestrate.md/.agent.md Process step
2 still named "secret indirection"), and an ADR-0015 Decision bullet that
claimed "this ADR does not update CONTEXT.md" while the same commit had
just added a forward-pointer sentence to CONTEXT.md's Plugin/Plugin
marketplace entries. Both reworded to match what actually happened.

apm-install's APM_INSTALL_DIR escape-hatch example dropped the curl pipe
entirely (`APM_INSTALL_DIR=... sh` with nothing piped into it) — fixed in
both apm-install/SKILL.md and the installation.md research doc, verified
against the upstream Microsoft APM docs via Context7.

Neither apm-workflow nor apm-orchestrate routed to plain `apm install
[PACKAGE_REF]`, the CLI command that actually resolves/fetches
dependencies declared in apm.yml — apm-install only bootstraps the apm
binary/runtime, not per-package deps. Added a 5th "install" dispatch
action to apm-workflow (new references/install.md, SKILL.md table row,
README usage/files sync, sources.md provenance entry) and a matching
"install" operation group on apm-orchestrate so it can route there.

configure.md's apm.yml schema block was also missing the "legacy singular
`target:` CSV form is still accepted" caveat its sibling research doc
documents for the same field — added for consistency.

The sixth finding (paired .md/.agent.md Output-contract disagreement) was
checked against git-orchestrate and gitea-orchestrate's existing pairs and
found to match established repo convention (JSON schema in .md, prose
summary without the enum in .agent.md) — left unchanged as a false
positive rather than "fixed."

kyberforge bumped 1.3.0 -> 1.3.1 via agent-author's normal improve flow.

Refs: #91

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0186ERbyACLRuRxPRnqwpa4m

plugins/kyberforge/skills/apm-workflow/README.md

@@ -4,7 +4,7 @@ Authors, scaffolds, compiles, and audits apm packages and marketplaces.
 
 ## What it does
 
-Covers the apm.yml lifecycle a session moves through repeatedly: configuring/scaffolding a package manifest, building or registering a marketplace, compiling/packing/publishing a distributable, and validating integrity via apm audit. Dispatches by requested action to one of four reference files, each self-contained for its concern.
+Covers the apm.yml lifecycle a session moves through repeatedly: configuring/scaffolding a package manifest, resolving/fetching its declared dependencies, building or registering a marketplace, compiling/packing/publishing a distributable, and validating integrity via apm audit. Dispatches by requested action to one of five reference files, each self-contained for its concern.
 
 ## Before you start
 
@@ -14,6 +14,7 @@ Requires the `apm` binary and (for runtime-driven scripts) an agent runtime alre
 
 ```
 /apm-workflow configure
+/apm-workflow install
 /apm-workflow marketplace
 /apm-workflow compile
 /apm-workflow audit
@@ -25,6 +26,7 @@ Requires the `apm` binary and (for runtime-driven scripts) an agent runtime alre
 |------|---------|
 | `SKILL.md` | Dispatch table and cross-cutting gotchas |
 | `references/configure.md` | apm.yml schema, apm plugin init, dependency forms, MCP secrets, registries |
+| `references/install.md` | apm install, apm install [PACKAGE_REF], --update, --target agent-skills |
 | `references/marketplace.md` | Building/registering a marketplace, package registration, versioning |
 | `references/compile.md` | apm compile / pack / publish / run |
 | `references/audit.md` | apm audit, apm audit --ci, apm marketplace check, CI wiring, frozen installs |