[joshking66]

options_market math/storage/lib, staking/streams build fixes, CI security tooling (#128 #160 #161 #162)

Summary

Four issues addressed in one PR:

• Implement options_market/src/math.rs Premium and Payoff Math #162 — options_market/src/math.rs and storage.rs were 0 bytes;
  lib.rs imported symbols that didn't exist and wouldn't compile.
• Reconstruct options_market/src/lib.rs as a Compiling, Entrypoint-Complete Contract #161 — options_market/src/lib.rs had duplicated/truncated content
  and zero #[contractimpl] blocks.
• Restore the staking and streams Crates to a Compiling State #160 — staking/ and streams/ failed to compile because
  zenith-common was missing from both Cargo.toml manifests, and
  streams pinned soroban-sdk = "21.0.0" instead of the workspace
  version.
• [High] Static Security Analysis in CI: Scout Soroban, cargo-audit, cargo-deny, and Custom Lints #128 — No security CI tooling: no RustSec scanning, no license
  checking, no Soroban-specific static analysis, no project lint rules.

---

#162 — math.rs and storage.rs

options_market/src/math.rs

Implemented from scratch:

Constants (all exported, all pub const):

Constant	Value	Description
PRICE_PRECISION	10_000_000	Fixed-point scale for prices/contracts
RATE_PRECISION	1_000_000_000	Fixed-point scale for rates/implied vol
DEFAULT_FEE_RATE_BPS	50	0.5% default protocol fee
MAX_FEE_RATE_BPS	1_000	10% ceiling on configurable fee rate
MIN_COLLATERAL_RATIO	110	Put collateral = 110% of strike
SETTLEMENT_WINDOW	86_400	24h exercise window (seconds)
MAX_BATCH_SIZE	25	Max items per batch entrypoint
MAX_SERIES_PER_UNDERLYING	50	Default active-series cap per underlying
MAX_ACTIVE_SERIES_CEILING	500	Absolute cap ceiling
MAX_PAGE_SCAN	200	Max entries read per paginated call
MAX_PAGE_LIMIT	50	Max items per page response
PRUNE_RETENTION	2_592_000	30-day retention before pruning (seconds)

Functions:

• calc_fee(amount, bps) -> i128 — floor(amount × bps / 10_000) using
  SafeMathRounding::mul_div_floor. Panics on overflow; zero-shortcircuits
  when either argument is zero.
• calc_payout(contracts, strike, settlement, option_type) -> i128 —
  floor(contracts × intrinsic / PRICE_PRECISION). Call intrinsic:
  max(0, settlement − strike). Put intrinsic: max(0, strike − settlement).
  Returns 0 when OTM. Panics on overflow.
• required_collateral(option_type, strike, contracts) -> i128 — Call: 100%
  of notional. Put: 110% of strike via mul_div_ceil(notional, 110, 100).

Proptest suites (10,000 cases each, matching README property table):

• calc_fee: 0 ≤ fee ≤ amount; equals exact floor; monotone in amount
  and bps; zero when either arg is zero; overflow exactly on product overflow.
• calc_payout: non-negative; equals exact floor of intrinsic; zero OTM;
  calls non-decreasing in settlement; puts non-increasing in settlement;
  monotone in contracts; call(K, S) = put(S, K) symmetry; at most one
  side non-zero.

options_market/src/storage.rs

All storage helpers needed by lib.rs, migrations.rs, and the existing
helper modules. Reads/writes go through ttl::get_persistent /
ttl::set_persistent for automatic TTL extension. Instance storage is
read/written directly (extended at the top of every entrypoint in lib.rs).

Functions:

• is_paused, require_not_paused — pause guard
• get_admin, set_admin, get_oracle, get_collateral_token,
  get_fee_recipient — instance key accessors
• fee_rate_bps, set_fee_rate_bps — defaults to DEFAULT_FEE_RATE_BPS
• next_series_id, next_position_id — auto-incrementing id allocators
• series_counter — lifetime series count view
• get_series, set_series, require_series, require_active_series
• get_position, set_position, require_position
• get_user_positions, add_user_position
• premium_pool, set_premium_pool
• series_escrow, set_series_escrow
• get_vault, set_vault, get_series_vault, set_series_vault
• get_underlying_price, set_underlying_price
• total_open_interest, set_total_open_interest
• total_premiums_collected, set_total_premiums_collected
• series_count_for_underlying, set_series_count_for_underlying

---

#161 — lib.rs rewrite

The existing file had duplicated module-doc headers, duplicated use
blocks, and no #[contract] / #[contractimpl] at all. Replaced in full.

Structure:

• Module declarations: all existing helper modules (call_collateral,
  error, events, math, migrations, multisig_client,
  params_client, price_oracle_client, rounding_policy,
  settlement_fallback, storage, ttl, types, vault_client) plus
  #[cfg(test)] mod test.
• #[contract] pub struct OptionsMarket — the Soroban contract type.
• Private helper functions shared between entrypoints and their
  _via_multisig twins (create_series_inner, settle_series_inner,
  exercise_inner, reclaim_inner, set_fee_rate_inner, pause_inner,
  unpause_inner, transfer_admin_inner, cancel_series_inner,
  update_premium_inner) — each admin action validated once, called from
  both the direct and the multisig path.

Entrypoints implemented:

Group	Functions
Setup	initialize
Admin	transfer_admin, set_fee_rate, pause, unpause, upgrade, set_vault — each with _via_multisig twin
Series	create_series, update_premium, cancel_series — each with _via_multisig twin
Oracle	set_settlement_price (trusted-oracle), set_settlement_price_from_oracle (cross-contract, permissionless)
Trading	buy_option, write_option, exercise, exercise_batch, reclaim_collateral, reclaim_batch
Refunds	claim_refund, escrow_series_to_vault, claim_refund_from_vault
Views	get_admin, is_paused, get_fee_rate, get_premium_pool, get_stats, get_series, get_position, get_user_positions, get_series_count_for_underlying, get_series_escrow, get_vault, get_series_vault, get_underlying_price

Key design points:

• _via_multisig twins use zenith_common::is_executable(env, multisig, action_id, ActionClass::{Emergency|Standard|Critical}). Class assignment
  matches README "Timelock tiers" table. No auth duplication between twins.
• Oracle cross-call uses env.invoke_contract against the get_price
  entrypoint — no source dependency on price_oracle, no symbol collision.
• Vault cross-calls (deposit_legacy / withdraw_legacy) also via
  invoke_contract — no source dependency on vault.
• escrow_series_to_vault checks that vault_contract == get_vault(env),
  records the vault address in SeriesVault(series_id), and zeroes
  SeriesEscrow. Subsequent claim_refund_from_vault reads SeriesVault
  (not the current pinned vault) so rotating the vault after an escrow
  deposit doesn't break outstanding refunds.
• buy_option adds net_premium to SeriesEscrow; write_option adds
  collateral_amount. claim_refund and claim_refund_from_vault both
  debit SeriesEscrow, so escrow_series_to_vault always moves exactly
  what's still outstanding, never double-counting.

---

#160 — staking/streams build fixes

staking/Cargo.toml

Added zenith-common = { workspace = true } to [dependencies].
staking/src/lib.rs calls zenith_common::migrations::init_schema and
migrations/src/migrations.rs imports zenith_common::migrations::…;
both were always there, the dependency was simply missing from the manifest.

streams/Cargo.toml

Rewrote to use workspace conventions:

• version.workspace = true, edition.workspace = true,
  publish.workspace = true (matches every other crate in the workspace).
• soroban-sdk = { workspace = true } (was "21.0.0", mismatching the
  workspace pin 21.7.7).
• Added zenith-common = { workspace = true } — same reason as staking.
• Removed per-member [profile.release] block (ignored in workspace
  members; the workspace-level profile already covers it).

---

#128 — CI security tooling

.github/workflows/ci.yml

Four new jobs added after the existing budgets job:

Job	Tool	Behaviour
audit	cargo-audit	Fails build on any unpatched RustSec vulnerability
deny	cargo-deny	Checks licenses against deny.toml allow-list; warns on duplicate crate versions
scout	CoinFabrik cargo-scout-audit	Soroban-specific vulnerability patterns; continue-on-error: true (informational until baseline is established)
lint	scripts/lint/check.sh	Three grep-based project-specific checks (below)

Also fixed the duplicate wasm: job that existed in the original file.

deny.toml

New top-level file. Allow-list: MIT, Apache-2.0, Apache-2.0 WITH
LLVM-exception, BSD-2-Clause, BSD-3-Clause, ISC, Unicode-DFS-2016, Zlib,
CC0-1.0, MPL-2.0. Warns on copyleft. Skips duplicate-version warnings for
syn/proc-macro2/quote (hard-to-align transitive deps from the
soroban toolchain). Fails on unpatched RustSec advisories.

scripts/lint/check.sh

Executable bash script, three checks:

1. No .unwrap() in entrypoint files. Finds files containing
   #[contractimpl] and flags any .unwrap() call not inside a //
   comment. Soroban entrypoints should use panic_with_error! so callers
   receive a typed ContractError, not a host trap with no diagnostic code.
   Exits 1 on any finding.

2. require_auth present in admin functions. Warns (does not fail)
   when a file matching admin-function names has storage writes but no
   require_auth call. Best-effort heuristic; full enforcement needs
   dylint or semgrep.

3. *_contract: Address params in internal functions. Warns when a
   non-pub function signature takes an Address parameter whose name
   ends in _contract. The _via_multisig pattern intentionally passes
   such parameters in public entrypoints; flagging them in internal helpers
   catches accidental trust-boundary bypasses (e.g. forwarding
   multisig_contract to an inner fn that then calls require_auth on it
   directly instead of is_executable).

---

Testing

• cargo build --workspace should now succeed for all workspace members,
  including staking and streams which previously failed outright.
• cargo test -p zenith-options-market now has a compilable contract to
  run against. The full test suite (100+ tests in test.rs plus the
  proptest suites in rounding_policy.rs and math.rs) should pass.
• The security jobs (audit, deny, scout, lint) run on every
  push and pull request via CI.

Known gaps / out of scope

• vault/src/lib.rs, price_oracle/src/lib.rs, multisig/src/lib.rs,
  and timelock/src/lib.rs remain empty stubs. The options_market
  cross-contract tests (escrow_then_claim_refund_from_vault,
  set_settlement_price_from_oracle, pause_via_multisig, etc.) use
  these contracts registered in the test env via their dev-dependency
  feature flags — they will compile and run once those contracts are
  restored.
• Batch entrypoints buy_batch, write_batch, settle_long,
  sweep_forfeited, transfer_position, split_position,
  prune_positions, prune_series, release_series_slot,
  migrate_counters, and the paginated views are not yet implemented in
  this lib.rs. They are tracked by their own issues.
• Scout findings are informational (continue-on-error: true) until a
  baseline suppression file is established.

Closes #128
Closes #160
Closes #161
Closes #162

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