Add 10 new cybersecurity skills with full folder anatomy

Skills added:
- implementing-privileged-access-workstation (IAM, PAW hardening)
- detecting-suspicious-oauth-application-consent (cloud security, Graph API)
- performing-hardware-security-module-integration (cryptography, PKCS#11)
- analyzing-android-malware-with-apktool (malware analysis, androguard)
- hunting-for-unusual-service-installations (threat hunting, T1543.003)
- detecting-shadow-it-cloud-usage (cloud security, proxy/DNS log analysis)
- performing-active-directory-forest-trust-attack (red team, impacket)
- implementing-deception-based-detection-with-canarytoken (deception, Canary API)
- analyzing-office365-audit-logs-for-compromise (cloud security, BEC detection)
- hunting-for-startup-folder-persistence (threat hunting, T1547.001)

Each skill includes SKILL.md, LICENSE, scripts/agent.py, references/api-reference.md

skills/performing-active-directory-forest-trust-attack/references/api-reference.md

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+# API Reference — Performing Active Directory Forest Trust Attack
+
+## Libraries Used
+- **impacket**: SMB/RPC transport for LSA SID lookups via `lsat.hLsarLookupSids2()`
+- **ldap3**: LDAP queries against `trustedDomain` objects and `foreignSecurityPrincipal` containers
+- **json**: JSON serialization for audit reports
+
+## CLI Interface
+```
+python agent.py --dc 10.0.0.1 --domain corp.local --username admin --password Pass123 trusts
+python agent.py --dc 10.0.0.1 --domain corp.local --username admin --password Pass123 foreign
+python agent.py --dc 10.0.0.1 --domain corp.local --username admin --password Pass123 lookup-sid --sid S-1-5-21-...
+python agent.py --dc 10.0.0.1 --domain corp.local --username admin --password Pass123 full
+```
+
+## Core Functions
+
+### `enumerate_trusts_ldap(dc_host, domain, username, password)` — Trust enumeration
+LDAP search: `(objectClass=trustedDomain)` under `CN=System,DC=...`.
+Attributes: trustPartner, trustDirection, trustType, trustAttributes, flatName.
+Decodes trust attribute bitmask for SID filtering, forest transitivity, RC4 encryption.
+
+### `enumerate_foreign_principals(dc_host, domain, username, password)` — Cross-forest members
+LDAP search: `(objectClass=foreignSecurityPrincipal)` under `CN=ForeignSecurityPrincipals`.
+Filters well-known SIDs (S-1-5-x with 3 dashes). Returns group memberships.
+
+### `lookup_sid_cross_forest(dc_host, domain, username, password, target_sid)` — LSA SID resolution
+Opens SMB transport to `\lsarpc`, binds MSRPC_UUID_LSAT, calls `hLsarLookupSids2()`.
+Resolves SIDs across trust boundaries.
+
+### `assess_trust_risk(trusts, foreign_principals)` — Risk scoring
+Scoring: +40 SID filtering disabled, +20 RC4 encryption, +15 bidirectional trust,
++10 forest transitive.
+
+### `full_audit(dc_host, domain, username, password)` — Comprehensive audit
+
+## Trust Direction Values
+| Value | Direction |
+|-------|-----------|
+| 0 | Disabled |
+| 1 | Inbound |
+| 2 | Outbound |
+| 3 | Bidirectional |
+
+## Trust Attribute Flags
+| Flag | Hex | Description |
+|------|-----|-------------|
+| NON_TRANSITIVE | 0x01 | Trust does not extend transitively |
+| QUARANTINED_DOMAIN | 0x04 | SID filtering enabled |
+| FOREST_TRANSITIVE | 0x08 | Forest-wide transitive trust |
+| USES_RC4_ENCRYPTION | 0x80 | RC4 trust key (weaker than AES) |
+
+## Impacket RPC Calls
+| Call | Module | Purpose |
+|------|--------|---------|
+| `hLsarOpenPolicy2` | lsad | Open LSA policy handle |
+| `hLsarLookupSids2` | lsat | Resolve SIDs to names across trust |
+| SMBTransport(`\lsarpc`) | transport | RPC transport over SMB |
+
+## Dependencies
+- `impacket` >= 0.11.0
+- `ldap3` >= 2.9.0
+- Network access to DC ports 389 (LDAP), 445 (SMB), 88 (Kerberos)